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A magazine is an
ammunition Ammunition (informally ammo) is the material fired, scattered, dropped, or detonated from any weapon or weapon system. Ammunition is both expendable weapons (e.g., bombs, missiles, grenades, land mines) and the component parts of other we ...
storage and feeding device for a repeating firearm, either integral within the gun (internal/fixed magazine) or externally attached (detachable magazine). The magazine functions by holding several cartridges within itself and sequentially pushing each one into a position where it may be readily loaded into the
barrel A barrel or cask is a hollow cylindrical container with a bulging center, longer than it is wide. They are traditionally made of wooden staves and bound by wooden or metal hoops. The word vat is often used for large containers for liquids, ...
chamber Chamber or the chamber may refer to: In government and organizations *Chamber of commerce, an organization of business owners to promote commercial interests *Legislative chamber, in politics *Debate chamber, the space or room that houses deliber ...
by the firearm's moving action. The detachable magazine is sometimes colloquially referred to as a " clip", although this is technically inaccurate since a clip is actually an accessory device used to help load ammunition into a magazine. Magazines come in many shapes and sizes, from tubular magazines on lever-action and
pump-action Pump action or slide action is a repeating firearm action that is operated manually by moving a sliding handguard on the gun's forestock. When shooting, the sliding forend is pulled rearward to eject any expended cartridge and typically to co ...
firearms that may
tandem Tandem, or in tandem, is an arrangement in which a team of machines, animals or people are lined up one behind another, all facing in the same direction. The original use of the term in English was in ''tandem harness'', which is used for two ...
ly hold several rounds, to detachable box and
drum magazine A drum magazine is a type of high-capacity magazine for firearms. Cylindrical in shape (similar to a drum), drum magazines store rounds in a spiral around the center of the magazine, facing the direction of the barrel. Drum magazines are contra ...
s for automatic rifles and
light machine gun A light machine gun (LMG) is a light-weight machine gun designed to be operated by a single infantryman, with or without an assistant, as an infantry support weapon. LMGs firing cartridges of the same caliber as the other riflemen of the ...
s that may hold more than one hundred rounds. Various jurisdictions ban what they define as "
high-capacity magazines A high-capacity magazine (or large-capacity magazine) is a magazine capable of holding more than the usual number of rounds of ammunition for a particular firearm. A magazine may also be defined as high-capacity in a legal sense, based on the ...
".


Nomenclature

With the increased use of semi-automatic and
automatic firearm An automatic firearm is an auto-loading firearm that continuously chambers and fires rounds when the trigger mechanism is actuated. The action of an automatic firearm is capable of harvesting the excess energy released from a previous discha ...
s, the detachable magazine became increasingly common. Soon after the adoption of the
M1911 The M1911 (Colt 1911 or Colt Government) is a single-action, recoil-operated, semi-automatic pistol chambered for the .45 ACP cartridge. The pistol's formal U.S. military designation as of 1940 was ''Automatic Pistol, Caliber .45, M1911'' for th ...
pistol, the term "magazine" was settled on by the military and firearms experts, though the term " clip" is often used in its place (though only for detachable magazines, never fixed)., translated from the French edition, 1916 The defining difference between clips and magazines is the presence of a feed mechanism in a magazine, typically a spring-loaded follower, which a clip lacks. A magazine has four parts as follows: a spring, a spring follower, a body and a base. A clip may be made of one continuous piece of stamped metal and have no moving parts. Examples of clips are moon clips for revolvers; "stripper" clips such as what is used for military 5.56 ammo, in association with a speedloader; or the ''en bloc'' clip for M1 Garand rifles, among others. Use of the term "clip" to refer to detachable magazines is a point of strong disagreement.


History

The earliest firearms were loaded with loose powder and a lead ball, and to fire more than a single shot without reloading required multiple
barrels A barrel or cask is a hollow cylindrical container with a bulging center, longer than it is wide. They are traditionally made of wooden staves and bound by wooden or metal hoops. The word vat is often used for large containers for liquids, u ...
, such as in
pepper-box The pepper-box revolver or simply pepperbox (also "pepper-pot", from its resemblance to the household pepper shakers) is a multiple-barrel firearm, mostly in the form of a handgun, that has three or more gun barrels in a coaxially revolving me ...
guns, double-barreled rifles,
double-barreled shotgun A double-barreled shotgun is a break-action shotgun with two parallel barrels, allowing two single shots to be fired in quick succession or simultaneously. Construction Modern double-barreled shotguns, often known as ''doubles'', are almost u ...
s, or multiple chambers, such as in
revolver A revolver (also called a wheel gun) is a repeating firearm, repeating handgun that has at least one gun barrel, barrel and uses a revolving cylinder (firearms), cylinder containing multiple chamber (firearms), chambers (each holding a single ...
s. Both of these add bulk and weight over a single barrel and a single chamber, however, and many attempts were made to get multiple shots from a single loading of a single barrel through the use of
superposed load A superposed load or stacked charge or superimposed load is a method used by various muzzle-loading firearms, from matchlocks to caplocks, as well as newer Metal Storm Limited, Metal Storm weapons, to fire multiple shots from a single barrel witho ...
s. While some early repeaters such as the
Kalthoff repeater The Kalthoff repeater was a type of repeating firearm that was designed by members of the Kalthoff family around 1630, and became the first repeating firearm to be brought into military service. At least nineteen gunsmiths are known to have mad ...
managed to operate using complex systems with multiple feed sources for ball, powder and primer, easily mass-produced repeating mechanisms did not appear until self-contained cartridges were developed.


First tubular

The first successful mass-produced repeating weapon to use a "tubular magazine" permanently mounted to the weapon was the Austrian Army's Girandoni air rifle, first produced in 1779. The first mass-produced repeating firearm was the
Volcanic Rifle The Volcanic Repeating Arms Company was an American company formed in 1855 by partners Horace Smith and Daniel B. Wesson to develop Walter Hunt's Rocket Ball ammunition and lever action mechanism. Volcanic made an improved version of the Rocket ...
which used a hollow bullet with the base filled with powder and primer fed into the chamber from a tube called a "magazine" with an integral spring to push the cartridges in to the action, thence to be loaded into the chamber and fired. It was named after a building or room used to store ammunition. The anemic power of the Rocket Ball ammunition used in the Volcanic doomed it to limited popularity.. The Henry repeating rifle is a lever-action,
breech-loading A breechloader is a firearm in which the user loads the ammunition ( cartridge or shell) via the rear (breech) end of its barrel, as opposed to a muzzleloader, which loads ammunition via the front ( muzzle). Modern firearms are generally breec ...
, tubular magazine fed
rifle A rifle is a long-barreled firearm designed for accurate shooting, with a barrel that has a helical pattern of grooves ( rifling) cut into the bore wall. In keeping with their focus on accuracy, rifles are typically designed to be held with ...
, and was an improved version of the earlier Volcanic rifle. Designed by
Benjamin Tyler Henry Benjamin Tyler Henry (March 22, 1821 – June 8, 1898) was an American gunsmith and manufacturer. He was the inventor of the Henry rifle, the first reliable lever-action repeating rifle. Henry was born in Claremont, New Hampshire in 1821. H ...
in 1860, it was one of the first firearms to use self-contained metallic cartridges. The Henry was introduced in 1860 and produced through 1866 in the United States by the New Haven Arms Company. It was adopted in small quantities by the Union in the Civil War and favored for its greater firepower than the standard issue carbine. Many later found their way West and was famed both for its use at the
Battle of the Little Bighorn The Battle of the Little Bighorn, known to the Lakota and other Plains Indians as the Battle of the Greasy Grass, and also commonly referred to as Custer's Last Stand, was an armed engagement between combined forces of the Lakota Sioux, No ...
, and being the basis for the iconic Winchester rifle which is still made to this day. The Henry and Winchester rifles would go on to see service with a number of militaries including Turkey. Switzerland and Italy adopted similar designs. The second magazine-fed firearm to achieve widespread success was the
Spencer repeating rifle The Spencer repeating rifles and carbines were 19th-century American lever-action firearms invented by Christopher Spencer. The Spencer was the world's first military metallic-cartridge repeating rifle, and over 200,000 examples were manufactur ...
, which saw service in the
American Civil War The American Civil War (April 12, 1861 – May 26, 1865; also known by Names of the American Civil War, other names) was a civil war in the United States. It was fought between the Union (American Civil War), Union ("the North") and t ...
. The Spencer used a tubular magazine located in the butt of the gun instead of under the barrel and it used new rimfire metallic cartridges. The Spencer was successful, but the rimfire ammunition did occasionally ignite in the magazine tube and destroy the magazine. It could also injure the user. The new
bolt-action Bolt-action is a type of manual firearm action that is operated by ''directly'' manipulating the bolt via a bolt handle, which is most commonly placed on the right-hand side of the weapon (as most users are right-handed). Most bolt-actio ...
rifles began to gain favor with militaries in the 1880s and were often equipped with tubular magazines. The
Mauser Model 1871 The Mauser Model 1871 adopted as the ''Gewehr'' 71 or ''Infanterie-Gewehr'' 71, or "Infantry Rifle 71" ("I.G.Mod.71" was stamped on the rifles themselves) was the first rifle model in a distinguished line designed and manufactured by Paul Mauser ...
was originally a single-shot action that added a tubular magazine in its 1884 update. The Norwegian
Jarmann M1884 The Jarmann M1884 is a Norwegian bolt-action repeating rifle designed in 1878 adopted in 1884. The Jarmann's adoption, and subsequent modifications, turned the Norwegian Army from a fighting force armed with single-shot Black powder, black-powder ...
was adopted in 1884 and also used a tubular magazine. The French
Lebel Model 1886 rifle The Lebel Model 1886 rifle (French: ''Fusil Modèle 1886 dit "Fusil Lebel"'') also known as the ''"Fusil Mle 1886 M93"'', after a bolt modification was added in 1893, is an 8 mm bolt-action infantry rifle that entered service in the French A ...
also used 8-round tubular magazine.


Integral box

The military cartridge was evolving as the magazine rifle evolved. Cartridges evolved from large-bore cartridges (.40 caliber/10 mm and larger) to smaller bores that fired lighter, higher-velocity bullets and incorporated new smokeless propellants. The
Lebel Model 1886 rifle The Lebel Model 1886 rifle (French: ''Fusil Modèle 1886 dit "Fusil Lebel"'') also known as the ''"Fusil Mle 1886 M93"'', after a bolt modification was added in 1893, is an 8 mm bolt-action infantry rifle that entered service in the French A ...
was the first rifle and cartridge to be designed for use with smokeless powder and used an 8 mm wadcutter-shaped bullet that was drawn from a tubular magazine. This would later become a problem when the Lebel's ammunition was updated to use a more aerodynamic pointed bullet. Modifications had to be made to the centerfire case to prevent the spitzer point from igniting the primer of the next cartridge inline in the magazine through recoil or simply rough handling. This remains a concern with lever-action firearms today. Two early box magazine patents were the ones by Rollin White in 1855 and William Harding in 1859. A detachable box magazine was patented in 1864 by the American Robert Wilson. Unlike later box magazines this magazine fed into a tube magazine and was located in the stock of the gun. Another box magazine, closer to the modern type, was patented in Britain (No. 483) by Mowbray Walker, George Henry Money and Francis Little in 1867.
James Paris Lee James Paris Lee (9 August 1831 – 24 February 1904) was a British Canadian and later American inventor and arms designer. He is best known for having invented the action and magazine that are used in the Lee–Metford and Lee–Enfield series ...
patented a box magazine which held rounds stacked vertically in 1879 and 1882 and it was first adopted by Austria in the form of an 11mm straight-pull bolt-action rifle, the Mannlicher M1886. It also used a cartridge clip which held 5 rounds ready to load into the magazine. The bolt-action Krag–Jørgensen rifle, designed in Norway in 1886, used a unique rotary magazine that was built into the receiver. Like Lee's box magazine, the rotary magazine held the rounds side-by-side, rather than end-to-end. Like most rotary magazines, it was loaded through a loading gate one round at a time, this one located on the side of the receiver. While reliable, the Krag–Jørgensen's magazine was expensive to produce and slow to reload. It was adopted by only three countries, Denmark in 1889, the United States in 1892, and Norway in 1894.


Clip-fed revolution

A clip (called ''chargers'' in the
United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the continental mainland. It comprises England, Scotland, Wales and ...
) is a device that is used to store multiple rounds of ammunition together as a unit, ready for insertion into the magazine or cylinder of a firearm. This speeds up the process of loading and reloading the firearm as several rounds can be loaded at once, rather than one round being loaded at a time. Several different types of clips exist, most of which are made of inexpensive metal stampings that are designed to be disposable, though they are often re-used. The first clips used were of the ''en bloc'' variety, developed by Ferdinand Mannlicher and first adopted by the
Austro-Hungarian Army The Austro-Hungarian Army (, literally "Ground Forces of the Austro-Hungarians"; , literally "Imperial and Royal Army") was the ground force of the Austro-Hungarian Dual Monarchy from 1867 to 1918. It was composed of three parts: the joint arm ...
, which would be used Austro-Hungarians during the first world war in the form of the Mannlicher M1895, derivatives of which would be adopted by many national militaries. The Germans used this system for their Model 1888 Commission Rifle, featuring a 5-round ''en bloc'' clip-fed internal box magazine. One problem with the ''en bloc'' system is that the firearm cannot be practically used without a ready supply of (mosty disposable) clips. Paul
Mauser Mauser, originally Königlich Württembergische Gewehrfabrik ("Royal Württemberg Rifle Factory"), was a German arms manufacturer. Their line of bolt-action rifles and semi-automatic pistols has been produced since the 1870s for the German arm ...
would solve this problem by introducing a stripper clip that functioned only to assist the user in loading the magazine quickly: it was not required to load the magazine to full capacity. He would continue to make improved models of rifles that took advantage of this new clip design from 1889 through
1898 Events January–March * January 1 – New York City annexes land from surrounding counties, creating the City of Greater New York as the world's second largest. The city is geographically divided into five boroughs: Manhattan, B ...
in various calibers that proved enormously successful, and were adopted by a wide range of national militaries. In 1890 the French adopted the 8mm Lebel Berthier rifles with 3-round internal magazines, fed from ''en bloc'' clips; the empty clips were pushed from the bottom of the action by the insertion of a loaded clip from the top. In the late 1800s there were many short-lived designs, such as the
M1895 Lee Navy The M1895 Lee Navy was a straight-pull, cam-action magazine rifle adopted in limited numbers by the U.S. Navy and Marine Corps in 1895 as a first-line infantry rifle.Walter, John, ''The Rifle Story: An Illustrated History from 1776 to the Prese ...
and
Gewehr 1888 The Gewehr 88 (commonly called the Model 1888 commission rifle) was a late 19th-century German bolt-action rifle, adopted in 1888. The invention of smokeless powder in the late 19th century immediately rendered all of the large-bore black powde ...
, eventually replaced by the M1903 Springfield rifle and Gewehr 98 respectively. The Russian
Mosin–Nagant The Mosin–Nagant is a five-shot, bolt-action, internal magazine–fed military rifle. Known officially as the 3-line rifle M1891 and informally in Russia and former Soviet Union as Mosin's rifle ( ru , винтовка Мосина, ISO 9: ) ...
, adopted in 1891, was an exception. It was not revolutionary; it was a bolt-action rifle, used a small-bore smokeless powder cartridge, and a fixed box magazine loaded from the top with
stripper clip A stripper clip (also known as a charger or charger clip, especially in British and in Commonwealth military vocabulary) is a speedloader that holds several cartridges (usually between 5 and 10) together in a single unit for easier and faster ...
s, all of which were features that were used in earlier military rifles. What made the Nagant stand out was that it combined all the earlier features in a form that was to last virtually unchanged from its issue by Russia in 1894 through
World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the World War II by country, vast majority of the world's countries—including all of the great power ...
and with its sniper rifle variants still in use today.


Magazine cut-off

An interesting feature of many late 19th- and early 20th-century bolt-action rifles was the magazine cut-off, sometimes called a feed interrupter. This was a mechanical device that prevented the rifle from loading a round from the magazine, requiring the shooter to manually load each individual round as he fired, saving the rounds in the magazine for short periods of rapid fire when ordered to use them. Most military authorities that specified them assumed that their riflemen would waste ammunition indiscriminately if allowed to load from the magazine all the time. By the mid-20th century, most manufacturers deleted this feature to save costs and manufacturing time; it is also likely that battlefield experience had proven the futility of this philosophy.


Final fixed-magazine developments

One of the last new clip-fed, fixed-magazine rifles widely adopted that was not a modification of an earlier rifle was the
M1 Garand The M1 Garand or M1 rifleOfficially designated as U.S. rifle, caliber .30, M1, later simply called Rifle, Caliber .30, M1, also called US Rifle, Cal. .30, M1 is a semi-automatic rifle that was the service rifle of the U.S Army during World W ...
. The first
semi-automatic rifle A semi-automatic rifle is an autoloading rifle that fires a single cartridge with each pull of the trigger, and uses part of the fired cartridge's energy to eject the case and load another cartridge into the chamber. For comparison, a bolt ...
that was issued in large numbers to the infantry, the Garand was fed by a special eight-round ''en bloc'' clip. The clip itself was inserted into the rifle's magazine during loading, where it was locked in place. The rounds were fed directly from the clip, with a spring-loaded follower in the rifle pushing the rounds up into feeding position. When empty, the bolt would lock open, and a spring would automatically eject the empty clip with a distinctive pinging sound, leaving the rifle ready to be reloaded. The
M14 rifle The M14 rifle, officially the United States Rifle, Caliber 7.62 mm, M14, is an American selective fire battle rifle chambered for the 7.62×51mm NATO (.308 in) cartridge. It became the standard-issue rifle for the U.S. military in 1959, r ...
, which was based on incremental changes to the Garand action, switched to a detachable box magazine. However, the M14 with magazine attached could also be loaded via 5-round stripper-clips. The Soviet
SKS The SKS (russian: Самозарядный карабин системы Симонова, Samozaryadny Karabin sistemy Simonova, 1945, self-loading carbine of (the) Simonov system, 1945) is a semi-automatic rifle designed by Soviet small arms ...
carbine, which entered service in 1945, was something of a stopgap between the semi-automatic service rifles being developed in the period leading up to World War II, and the new assault rifle developed by the Germans. The SKS used a fixed magazine, holding ten rounds and fed by a conventional stripper clip. It was a modification of the earlier AVS-36 rifle, shortened and chambered for the new reduced power 7.62×39mm cartridge. It was rendered obsolete for military use almost immediately by the 1947 introduction of the magazine-fed
AK-47 The AK-47, officially known as the ''Avtomat Kalashnikova'' (; also known as the Kalashnikov or just AK), is a gas-operated assault rifle that is chambered for the 7.62×39mm cartridge. Developed in the Soviet Union by Russian small-arms d ...
assault rifle, though it remained in service for many years in Soviet Bloc nations alongside the AK-47. The detachable magazine quickly came to dominate post-war military rifle designs.


Detachable box magazines

Firearms using detachable magazines are made with an opening known as a ''magazine well'' into which the detachable magazine is inserted. The magazine well locks the magazine in position for feeding cartridges into the chamber of the firearm, and requires a device known as a ''magazine release'' to allow the magazine to be separated from the firearm. The
Lee–Metford The Lee–Metford rifle (a.k.a. ''Magazine Lee–Metford'', abbreviated ''MLM'') was a bolt-action British army service rifle, combining James Paris Lee's rear-locking bolt system and detachable magazine with an innovative seven groove rifled b ...
rifle, developed in 1888, was one of the first rifles to use a detachable box magazine, and the spare one was could be optionally worn on soldier equipment, although with the adoption of the Short Magazine Lee–Enfield Mk I this was became only detachable for cleaning and not swapped to reload the weapon. However, the first completely modern removable box magazine was patented in 1908 by Arthur Savage for the
Savage Model 99 The Savage Model 99, Model 1899, and their predecessor the model 1895 are a series of hammerless lever action rifles created by the Savage Arms Company in Utica, New York. The Model 99 family featured a unique rotary magazine, and later added som ...
(1899), although it was not implemented on the 99 until 1965. Other guns did not adopt all of its features until his patent expired in 1942: It has shoulders to retain cartridges when it is removed from the rifle. It operates reliably with cartridges of different lengths. It is insertable and removable at any time with any number of cartridges. These features allow the operator to reload the gun infrequently, carry magazines rather than loose cartridges, and to easily change the types of cartridges in the field. The magazine is assembled from inexpensive stamped sheet metal. It also includes a crucial safety feature for hunting dangerous game: when empty the follower stops the bolt from engaging the chamber, informing the operator that the gun is empty before any attempt to fire. The first successful
semi-automatic pistol A semi-automatic pistol is a type of repeating single-chamber handgun ( pistol) that automatically cycles its action to insert the subsequent cartridge into the chamber (self-loading), but requires manual actuation of the trigger to actu ...
was the
Borchardt C-93 The Borchardt C93 is a semi-automatic pistol designed by Hugo Borchardt in 1893. The design is based upon the Maxim gun's toggle lock model. Borchardt developed the high-velocity, bottlenecked 7.65×25mm Borchardt cartridge for the C93. His ...
(1893) and incorporated detachable box magazines. Nearly all subsequent semiautomatic pistol designs adopted detachable box magazines. The Swiss Army evaluated the Luger pistol using a detachable box magazine in 7.65×21mm Parabellum and adopted it in 1900 as its standard sidearm. The Luger pistol was accepted by the Imperial German Navy in 1904. This version is known as Pistole 04 (or P.04). In 1908 the German Army adopted the Luger to replace the Reichsrevolver in front-line service. The Pistole 08 (or P.08) was chambered in
9×19mm Parabellum The 9×19mm Parabellum (also known as 9mm Parabellum or 9mm Luger or simply 9mm) is a rimless, tapered firearms cartridge. Originally designed by Austrian firearm designer Georg Luger in 1901, it is widely considered the most popular handgun ...
. The P.08 was the usual side arm for German Army personnel in both
World Wars A world war is an international conflict which involves all or most of the world's major powers. Conventionally, the term is reserved for two major international conflicts that occurred during the first half of the 20th century, World WarI (1914 ...
. The M1911 semi-automatic pistol set the standard for most modern handguns and likewise the mechanics of the handgun magazine. In most handguns the magazine follower engages a slide-stop to hold the slide back and keep the firearm out of battery when the magazine is empty and all rounds fired. Upon inserting a loaded magazine, the user depresses the slide stop, throwing the slide forward, stripping a round from the top of the magazine stack and chambering it. In single-action pistols this action keeps the hammer cocked back as the new round is chambered, keeping the gun ready to begin firing again. During World War One, detachable box magazines found favor, being used in all manner of firearms, such as pistols, light-machine guns, submachine guns, semi-automatic and automatic rifles. However, after the
War to End All Wars "The war to end war" (also "The war to end all wars"; originally from the 1914 book '' The War That Will End War'' by H. G. Wells) is a term for the First World War of 1914–1918. Originally an idealistic slogan, it is now mainly used sardonic ...
, military planners failed to recognize the importance of automatic rifles and detachable box magazine concept, and instead maintained their traditional views and preference for clip-fed
bolt-action rifle Bolt-action is a type of manual firearm action that is operated by ''directly'' manipulating the bolt via a bolt handle, which is most commonly placed on the right-hand side of the weapon (as most users are right-handed). Most bolt-actio ...
s. As a result, many promising new automatic rifle designs that used detachable box magazines were abandoned. As World War II loomed, most of the world's major powers began to develop submachine guns fed by 20- to 40-round detachable box magazines. However, of the major powers, only the United States would adopt a general-issue semi-automatic rifle that used detachable box magazines: the M1 carbine with its 15-round magazines. As the war progressed the Germans developed the Sturmgewehr 44 assault rifle concept with its 30-round detachable magazine. After WWII, automatic weapons using detachable box magazines were developed and used by all of the world's armies. Today, detachable box magazines are the norm and they are so widely used that they are simply referred to as magazines or "mags" for short.


Function and types

All cartridge-based single-barrel firearms designed to fire more than a single shot without reloading require some form of magazine designed to store and feed cartridges to the firearm's action. Magazines come in many shapes and sizes, with the most common type in modern firearms being the detachable box type. Most magazines designed for use with a reciprocating bolt firearm (tube fed firearms being the exception) make use of a set of feed lips which stop the vertical motion of the cartridges out of the magazine but allow one cartridge at a time to be pushed forward (stripped) out of the feed lips by the firearm's bolt into the chamber. Some form of spring and follower combination is almost always used to feed cartridges to the lips which can be located either in the magazine (most removable box magazines) or built into the firearm (fixed box magazines). There are also two distinct styles to feed lips. In a single-feed design the top cartridge touches both lips and is commonly used in single-column box magazines, while a staggered feed magazine (sometimes called double-feed magazine, not to be confused with the firearm malfunction) consists of a wider set of lips so that the second cartridge in line forces the top cartridge against one lip. The staggered-feed design has proven more resistant to jamming in use with double-column magazines than single-feed variants, since the narrowing of a magazine tube to a single-feed induces extra friction which the magazine springs needs to overcome. Some magazine types are strongly associated with certain firearm types, such as the fixed "tubular" magazine found on most lever-action rifles and
pump-action Pump action or slide action is a repeating firearm action that is operated manually by moving a sliding handguard on the gun's forestock. When shooting, the sliding forend is pulled rearward to eject any expended cartridge and typically to co ...
shotguns. A firearm using detachable magazines may accept a variety of types of magazine, such as the
Thompson submachine gun The Thompson submachine gun (also known as the "Tommy Gun", "Chicago Typewriter", "Chicago Piano", “Trench Sweeper” or "Trench Broom") is a blowback-operated, air-cooled, Magazine-fed rifle, magazine-fed Selective fire, selective-fire subm ...
, most variations of which would accept box or drum magazines. Some types of firearm, such as the M249 and other
squad automatic weapon A squad automatic weapon (SAW), also known as a section automatic weapon or light support weapon (LSW), is a man-portable automatic firearm attached to infantry squads or sections as a source of rapid direct firepower. Weapons fulfilling t ...
s, can feed from both magazines and belts.


Tubular

Many of the first
repeating rifle A repeating rifle is a single-barreled rifle capable of repeated discharges between each ammunition reloads. This is typically achieved by having multiple cartridges stored in a magazine (within or attached to the gun) and then fed individually in ...
s, particularly lever-action rifles, used magazines that stored cartridges nose-to-end inside of a spring-loaded tube typically running parallel under the barrel, or in the buttstock. Tubular magazines are also commonly used in
pump-action Pump action or slide action is a repeating firearm action that is operated manually by moving a sliding handguard on the gun's forestock. When shooting, the sliding forend is pulled rearward to eject any expended cartridge and typically to co ...
shotguns and
.22 caliber .22 caliber, or 5.6 mm caliber, refers to a common firearms bore diameter of 0.22 inch (5.6 mm). Cartridges in this caliber include the very widely used .22 Long Rifle and .223 Remington / 5.56×45mm NATO. .22 inch is also a popular ...
bolt-action Bolt-action is a type of manual firearm action that is operated by ''directly'' manipulating the bolt via a bolt handle, which is most commonly placed on the right-hand side of the weapon (as most users are right-handed). Most bolt-actio ...
rimfire rifles such as the Marlin Model XT. Tubular magazines and centerfire cartridges with pointed ( spitzer) bullets present a safety issue: a pointed bullet may (through the forces of recoil or simply rough handling) strike the next round's
primer Primer may refer to: Arts, entertainment, and media Films * ''Primer'' (film), a 2004 feature film written and directed by Shane Carruth * ''Primer'' (video), a documentary about the funk band Living Colour Literature * Primer (textbook), a te ...
and ignite that round, or even cause a chain ignition of other rounds, within the magazine. The
Winchester '73 ''Winchester '73'' is a 1950 American Western film directed by Anthony Mann and starring James Stewart, Shelley Winters, Dan Duryea and Stephen McNally. Written by Borden Chase and Robert L. Richards, the film is about the journey of a pr ...
used blunt-nosed centerfire cartridges as the
.44-40 Winchester The .44-40 Winchester, also known as .44 Winchester, .44 WCF (Winchester Center Fire), and .44 Largo (in Spanish-speaking countries) was introduced in 1873 by the Winchester Repeating Arms Company. It was the first metallic centerfire cartridge m ...
. Certain modern rifle cartridges using soft pointed plastic tips have been designed to avoid this problem while improving the aerodynamic qualities of the bullet to match those available in bolt-action designs, thus extending the effective range of lever-actions.


Box

The most popular type of magazine in modern rifles and handguns, a box magazine stores cartridges in a column, either one above the other or in staggered
zigzag A zigzag is a pattern made up of small corners at variable angles, though constant within the zigzag, tracing a path between two parallel lines; it can be described as both jagged and fairly regular. In geometry, this pattern is described as ...
fashion. This zigzag stack is often identified as a ''double-column'' or ''double-stack'' (The double-stack is much more common because of its ability to store more rounds), since a single staggered column is actually two side-by-side vertical columns offset by half of the diameter of a round. As the firearm cycles, cartridges are moved to the top of the magazine by a follower driven by spring compression to either a single-feed position or side-by-side feed positions. Box magazines may be integral to the firearm or removable. * An ''internal box'', ''integral box'' or ''fixed'' magazine (also known as a ''blind'' box magazine when lacking a floorplate) is built into the firearm and is not easily removable. This type of magazine is found most often on
bolt-action Bolt-action is a type of manual firearm action that is operated by ''directly'' manipulating the bolt via a bolt handle, which is most commonly placed on the right-hand side of the weapon (as most users are right-handed). Most bolt-actio ...
rifles. An internal box magazine is usually charged through the action, one round at a time. Military rifles often use stripper clips, a.k.a. chargers, permitting multiple rounds, commonly 5 or 10 at a time, to be loaded in rapid sequence. Some internal box magazines use ''en bloc'' clips that are loaded into the magazine with the ammunition and that are ejected from the firearm when empty. * A ''detachable box'' magazine is a self-contained mechanism capable of being loaded or unloaded while detached from the host firearm. They are attached via a slot in the firearm receiver, usually below the action (
BAR Bar or BAR may refer to: Food and drink * Bar (establishment), selling alcoholic beverages * Candy bar * Chocolate bar Science and technology * Bar (river morphology), a deposit of sediment * Bar (tropical cyclone), a layer of cloud * Bar ( ...
, MP 40,
AK 47 The AK-47, officially known as the ''Avtomat Kalashnikova'' (; also known as the Kalashnikov or just AK), is a gas-operated assault rifle that is chambered for the 7.62×39mm cartridge. Developed in the Soviet Union by Russian small-arms d ...
, and
M16 The M16 rifle (officially designated Rifle, Caliber 5.56 mm, M16) is a family of military rifles adapted from the ArmaLite AR-15 rifle for the United States military. The original M16 rifle was a 5.56×45mm automatic rifle with a 20-roun ...
), to the side of the action, (
Sten The STEN (or Sten gun) is a family of British submachine guns chambered in 9×19mm which were used extensively by British and Commonwealth forces throughout World War II and the Korean War. They had a simple design and very low production cos ...
,
FG 42 The FG 42 (German: ''Fallschirmjägergewehr'' 42, "paratrooper rifle 42") is a selective-fire 7.92×57mm Mauser automatic rifle produced in Nazi Germany during World War II. The weapon was developed specifically for the use of the ''Fallschirm ...
, Johnson LMG, Sterling, and M249) or on top of the action ( Madsen machine gun,
Bren gun The Bren gun was a series of light machine guns (LMG) made by Britain in the 1930s and used in various roles until 1992. While best known for its role as the British and Commonwealth forces' primary infantry LMG in World War II, it was also use ...
, Owen gun, and P90). When necessary, the magazine can easily be detached from the firearm and replaced by another. This significantly speeds the process of reloading, allowing the operator quick access to ammunition. This type of magazine may be straight or curved, the curve being necessary if the rifle uses rimmed ammunition or ammunition with a tapered case. Detachable box magazines may be metal or plastic. The plastic magazines are sometimes partially transparent so the operator can easily check the remaining ammunition. Box magazines are often affixed to each other with clamps, clips, tape, straps, or built-in studs to facilitate faster reloading: see
jungle style Firearm magazines are used "jungle style" if they are fixed together side by side, often with tape. The spare magazine may be pointing downwards in relation to the one fitted to the weapon. This configuration is used to speed up the process of r ...
. There are, however, exceptions to these rules. The
Lee–Enfield The Lee–Enfield or Enfield is a bolt-action, magazine-fed repeating rifle that served as the main firearm of the military forces of the British Empire and Commonwealth during the first half of the 20th century, and was the British Army's sta ...
rifle had a detachable box magazine only to facilitate cleaning. The Lee–Enfield magazine did open, permitting rapid unloading of the magazine without having to operate the bolt-action repeatedly to unload the magazine. Others, like the Breda Modello 30, had a fixed protruding magazine that resembled a conventional detachable box but was non-detachable. Pistol magazines are often single- or double-stack with single-feed, which may be due to this design being slimmer at the top which can simplify the design of the pistol frame with regards to grip thickness. Some examples of pistols with staggered-feed are the
Mauser C96 The Mauser C96 (''Construktion 96'') is a semi-automatic pistol that was originally produced by German arms manufacturer Mauser from 1896 to 1937. Unlicensed copies of the gun were also manufactured in Spain and China in the first half of the 2 ...
,
Stechkin APS The Stechkin or APS (''Avtomaticheskiy Pistolet Stechkina'' = ''Автоматический Пистолет Стечкина'') is a Soviet selective fire machine pistol chambered in 9×18mm Makarov and 9×19mm Parabellum introduced into ser ...
, Steyr GB,
HK VP70 The VP70 is a 9×19mm, 18-round, double action only, semi-automatic/three-round burst capable polymer frame pistol manufactured by German arms firm Heckler & Koch GmbH. VP stands for ''Volkspistole'' (literally "People's Pistol"), and the desig ...
,
QSZ-92 The QSZ-92 () is a semi-automatic pistol designed by Norinco. History The development of the QSZ-92 pistol began circa 1994 and it is now being adopted by the People's Liberation Army's forces. The export variants (9×19 mm versions) include the ...
,
FN Five-seveN The FN Five-seven (stylized as Five-seveN) is a semi-automatic pistol designed and manufactured by FN Herstal in Belgium. The pistol is named for its 5.7×28mm (.224 in) bullet diameter, and the trademark capitalization style is intended to ...
and
GSh-18 The GSh-18 (Cyrillic: Г Ш-18) is a 9 mm semi-automatic pistol developed by the KBP Instrument Design Bureau in Tula during the 1990s. The pistol's name is derived from its designers—Gryazev and Shipunov—and its magazine capacity of 18 round ...
.


Horizontal

The
FN P90 The FN P90 is a compact 5.7×28mm personal defense weapon designed and manufactured by FN Herstal in Belgium. It can also be considered a submachine gun. Created in response to NATO requests for a replacement for 9×19mm Parabellum firearms, th ...
and Kel-Tec P50
personal defense weapon Personal defense weapons (PDWs) are a class of firearms intended for self-defense and security rather than warfare and infantry. Most PDWs fire a small-caliber (less than ), centerfire bottleneck cartridge resembling a scaled-down intermedia ...
s use horizontally mounted feeding systems. The magazine sits parallel to the barrel, fitting flush with the top of the receiver, and the ammunition is rotated 90 degrees by a spiral feed ramp before being chambered. The Heckler & Koch G11, an experimental assault rifle that implements
caseless ammunition Caseless ammunition (CL), or rather caseless cartridge, is a configuration of weapon-cartridge that eliminates the cartridge case that typically holds the primer, propellant and projectile together as a unit. Instead, the propellant and primer ar ...
, also functions similarly with the magazine aligned horizontally over the barrel. Rather than being positioned laterally to the barrel like with the aforementioned examples, ammunition is positioned vertically with the bullet facing downward at a 90 degree angle relative to the barrel where it is fed into a rotary chamber before firing. The AR-57, also known as the AR Five-seven, is an upper receiver for the
AR-15 An AR-15-style rifle is any lightweight semi-automatic rifle based on the Colt AR-15 design. The original ArmaLite AR-15 is a scaled-down derivative of Eugene Stoner's ArmaLite AR-10 design. The then Fairchild Engine and Airplane Corporation ...
/M16 rifle lower receiver, firing FN 5.7×28mm rounds from standard FN P90 magazines.


Casket

Another form of box magazine, sometimes referred to as a "quad-column", can hold a large amount of ammunition. It is wider than a standard box magazine, but retains the same length. Casket magazines can be found on the Suomi KP/-31,
Hafdasa C-4 Hispano-Argentina was an Argentine automotive and engineering company that manufactured automobiles, military vehicles, engines, weaponry, and parts for public works.Spectre M4 The Spectre M4 is an Italian submachine gun that was produced by the SITES factory in Turin. It was designed by Roberto Teppa and Claudio Gritti in the mid-1980s. Production in Italy ceased in the year 1997, with the closure of SITES, but proce ...
, QCW-05 and on 5.45×39mm AK rifle derivatives.
Magpul Magpul Industries Corporation is an American designer and manufacturer of high-tech polymer and composite firearms accessories like M-LOK. Magpul Industries takes its name from its first product, the MagPul (Magazine Puller), an accessory for th ...
has been granted a patent for a
STANAG In NATO, a standardization agreement (STANAG, redundantly: STANAG agreement) defines processes, procedures, terms, and conditions for common military or technical procedures or equipment between the member countries of the alliance. Each NATO st ...
-compatible casket magazine, and such a magazine was also debuted by SureFire in December 2010, and is now sold as the MAG5-60 and MAG5-100 high capacity magazine (HCM) in 60 and 100 round capacities, respectively, in 5.56mm for AR-15 compatible with M4/M16/AR-15 variants and other firearms that accept STANAG 4179 magazines. Izhmash has also developed a casket magazine for the AK-12.


Rotary

The rotary (or spool) magazine consists of a cylindrical
sprocket A sprocket, sprocket-wheel or chainwheel is a profiled wheel with teeth that mesh with a chain, track or other perforated or indented material. The name 'sprocket' applies generally to any wheel upon which radial projections engage a chain pas ...
actuated by a
torsion spring A torsion spring is a spring that works by twisting its end along its axis; that is, a flexible elastic object that stores mechanical energy when it is twisted. When it is twisted, it exerts a torque in the opposite direction, proportional ...
, with cartridges fitting between the tooth bar of the sprocket, which is mounted on a spindle parallel to the bore axis and rotates each round sequentially into the feeding position. Rotary magazines may be fixed or detachable, and are usually of low capacity under ten rounds, depending on the caliber used. John Smith patented a rotary magazine in 1856. Another rotary magazine was produced by Sylvester Roper in 1866 and was also used in the weapons by Anton Spitalsky and the Savage Model 1892. Otto Schönauer first patented a spool magazine in 1886 and his later design, patented in 1900, was used on
bolt-action Bolt-action is a type of manual firearm action that is operated by ''directly'' manipulating the bolt via a bolt handle, which is most commonly placed on the right-hand side of the weapon (as most users are right-handed). Most bolt-actio ...
rifles produced at least until 1979, among them Mannlicher–Schönauer adopted by the
Greek Army The Hellenic Army ( el, Ελληνικός Στρατός, Ellinikós Stratós, sometimes abbreviated as ΕΣ), formed in 1828, is the land force of Greece. The term ''Hellenic'' is the endogenous synonym for ''Greek''. The Hellenic Army is the ...
in 1903. The
M1941 Johnson rifle The M1941 Johnson Rifle is an American short-recoil operated semi-automatic rifle designed by Melvin Johnson prior to World War II. Although the M1941 was used in limited numbers by the US Marines during the Second World War, it unsuccessfully ...
also uses a rotary magazine. The design is still used in some modern firearms, most notably the Ruger American series, the semi-automatic
Ruger 10/22 The Ruger 10/22 is a series of semi-automatic rifles produced by American firearm manufacturer Sturm, Ruger & Co., chambered for the .22 Long Rifle rimfire cartridge. It uses a patented 10-round rotary magazine, though higher capacity box ma ...
, the bolt-action
Ruger 77/22 The Ruger 77/22 is a bolt-action rimfire rifle chambered for the .22 Long Rifle, .22 WMR, or .22 Hornet. It has a removable rotary magazine which allows the magazine to fit flush with the bottom of the stock. The 77/22 was introduced in 1983 a ...
and the
Steyr SSG 69 The SSG 69 (''Scharfschützengewehr 69'', literally Sharpshooter Rifle 69) is a bolt-action sniper rifle produced by Steyr Mannlicher that serves as the standard sniper rifle for the Austrian Army. Adopted in 1969 (hence the designation), it was ...
.


Drum

Drum magazines are used primarily for
light machine gun A light machine gun (LMG) is a light-weight machine gun designed to be operated by a single infantryman, with or without an assistant, as an infantry support weapon. LMGs firing cartridges of the same caliber as the other riflemen of the ...
s. In one type, a moving partition within a cylindrical chamber forces loose rounds into an exit slot, with the cartridges being stored parallel to the axis of rotation. After loading of the magazine, a wound spring or other mechanism forces the partition against the rounds. In all models a single staggered column is pushed by a follower through a curved path. From there the rounds enter the vertical riser either from a single or dual drums. Cylindrical designs such as rotary and drum magazines allow for larger capacity than box magazines, without growing to excessive length. The downside of a drum magazine's extra capacity is its added weight that, combined with the gun, can affect handling and prolonged use. Drum magazines can be more difficult to incorporate into combat gear compared to more regular, rectangular box magazines. Many drum-fed firearms can also load from conventional box magazines, such as the Soviet
PPSh-41 The PPSh-41 () is a Soviet submachine gun designed by Georgy Shpagin as a cheaper and simplified alternative to the PPD-40. A common Russian nickname for the weapon is "''papasha''" (), meaning "daddy", and it was sometimes called the "burp gun" ...
submachine gun,
RPK The RPK (russian: Ручной пулемёт Калашникова/РПК, Ruchnoy Pulemyot Kalashnikova, link=no, English: "Kalashnikov hand-held machine gun"), sometimes retroactively termed the RPK-47, is a Soviet 7.62×39mm light machine ...
light machine gun and the American
Thompson submachine gun The Thompson submachine gun (also known as the "Tommy Gun", "Chicago Typewriter", "Chicago Piano", “Trench Sweeper” or "Trench Broom") is a blowback-operated, air-cooled, Magazine-fed rifle, magazine-fed Selective fire, selective-fire subm ...
. The term "drum" is sometimes applied to a belt box for a belt-fed machine gun, though this is just a case that houses a length of ammunition belt, not a drum magazine.


Saddle-drum

Before WWII the Germans developed 75-round saddle-drum magazines for use in their
MG 13 The MG 13 (shortened from German Maschinengewehr 13) is a German light machine gun developed by converting the Dreyse Model 1918 heavy water-cooled machine gun into an air-cooled version. History Dreyse Model 1918 Machinegun: In 1907 Louis Schmeis ...
and MG 15 machine guns. The
MG 34 The MG 34 (shortened from German: ''Maschinengewehr 34'', or "machine gun 34") is a German recoil-operated air-cooled general-purpose machine gun, first tested in 1929, introduced in 1934, and issued to units in 1936. It introduced an entirely n ...
machine guns could also use saddle-drum magazine when fitted with a special feed cover. The 75 rounds of ammunition were evenly distributed in each side of the magazine with a central feed "tower" where the ammunition is fed to the bolt. The ammunition was fed by a spring force, with rounds alternating from each side of the double drum so that the gun would not become unbalanced.


Pan

The pan magazine differs from other circular magazines in that the cartridges are stored perpendicular to the axis of rotation, rather than parallel, and are usually mounted on top of the firearm. This type is used on the Lewis Gun,
Vickers K The Vickers K machine gun, known as the Vickers Gas Operated (Vickers G.O.) or Gun, Machine, Vickers G.O. .303-inch in British service, was a rapid-firing machine gun developed and manufactured for use in aircraft by Vickers-Armstrongs. The hig ...
,
Bren Gun The Bren gun was a series of light machine guns (LMG) made by Britain in the 1930s and used in various roles until 1992. While best known for its role as the British and Commonwealth forces' primary infantry LMG in World War II, it was also use ...
(only used in anti-aircraft mountings),
Degtyaryov light machine gun The Degtyaryov machine gun (russian: Пулемёт Дегтярёвa Пехотный, Pulemyot Degtyaryova Pekhotny literally: "Degtyaryov's infantry machine gun") or DP-27/DP-28 is a light machine gun firing the 7.62×54mmR cartridge that was ...
, and American-180 submachine gun. A highly unusual example was found on the
Type 89 machine gun Type 89 refers to two unrelated Imperial Japanese Army aircraft machine guns. Its Imperial Japanese Navy counterparts are the Type 97 machine gun (fixed), and Type 92 machine gun (a Lewis gun copy). Type 89 fixed The first machine gun is a ...
fed from two 45-round quadrant-shaped pan magazines (each magazine had a place for nine 5-round stripper clips).


Helical

Helical magazines extend the drum magazine design so that rounds follow a spiral path around an auger-shaped rotating follower or ''drive member'', allowing for large ammunition capacity in a relatively compact package (compared to a regular box magazine of similar capacity). Early helical magazine designs include that patented by an unidentified inventor through the patent agent William Edward Newton in 1857 and the internal magazine of the Evans Repeating Rifle, patented in the late 1860s. This type of magazine is used by the Calico M960, PP-19 Bizon, CS/LS06 and KBP PP90M1. The North Korean military uses a 100- to 150- round helical magazine in the Type 88 assault rifle. Helical magazines offer substantially more ammunition carriage, however they are inherently complex designs. As such, they can be difficult to load and may decrease the reliability of feeding the weapon.


STANAG magazine

A ''STANAG magazine'' or ''NATO magazine'' is a type of detachable magazine proposed by
NATO The North Atlantic Treaty Organization (NATO, ; french: Organisation du traité de l'Atlantique nord, ), also called the North Atlantic Alliance, is an intergovernmental military alliance between 30 member states – 28 European and two N ...
in October 1980. Shortly after NATO's acceptance of the 5.56×45mm NATO rifle cartridge, Draft Standardization Agreement (
STANAG In NATO, a standardization agreement (STANAG, redundantly: STANAG agreement) defines processes, procedures, terms, and conditions for common military or technical procedures or equipment between the member countries of the alliance. Each NATO st ...
) 4179 was proposed in order to allow NATO members to easily share rifle ammunition and magazines down to the individual soldier level. The U.S. M16 rifle magazine was proposed for standardization. Many NATO members subsequently developed or purchased rifles with the ability to accept this type of magazine. However, the standard was never ratified and remains a "Draft STANAG". The STANAG magazine concept is only an interface, dimensional, and control (magazine latch, bolt stop, etc.) requirement. Therefore, it not only allows one type of magazine to interface with various weapon systems, but also allows STANAG magazines to be made in various configurations and capacities. The standard STANAG magazines are 20, 30, and 40 round box magazines, but there are many other designs available with capacities ranging from 1 round to 60 and 100 round casket magazines, 90 round snail-drum magazines, and 100 round and 150 round double-drum magazines.


High-capacity magazines

In the United States, a number of states have passed laws that ban magazines which are defined as "high-capacity" by statute. High-capacity or large-capacity magazines are generally those defined by statute to be capable of holding more than 10 to 15 rounds, although the definitions vary. Other nations impose restrictions on magazine capacity as well. In Canada, magazines are generally limited to 5 rounds for
rifle A rifle is a long-barreled firearm designed for accurate shooting, with a barrel that has a helical pattern of grooves ( rifling) cut into the bore wall. In keeping with their focus on accuracy, rifles are typically designed to be held with ...
s and 10 for
handgun A handgun is a short-barrelled gun, typically a firearm, that is designed to be usable with only one hand. It is distinguished from a long gun (i.e. rifle, shotgun or machine gun, etc.), which needs to be held by both hands and also braced ag ...
s (with some exceptions), depending on the firearm.


See also

* Belt (firearms) * Bottom metal *
Jungle style (firearm magazines) Firearm magazines are used "jungle style" if they are fixed together side by side, often with tape. The spare magazine may be pointing downwards in relation to the one fitted to the weapon. This configuration is used to speed up the process of r ...
*
List of 3D printed weapons and parts This is a list of notable 3D printed weapons and parts. The table below lists noteworthy 3D printed weapons (mainly firearms) and parts of weapons as well as items with a defense-related background. It includes 3D printed weapons and parts created ...


References


Further reading

*


External links


Difference Between a Magazine and a Clip video


{{DEFAULTSORT:Magazine (Firearms) Firearm components