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The M1917 revolvers were six-shot,
.45 ACP The .45 ACP ( Automatic Colt Pistol), also known as .45 Auto, .45 Automatic, or 11.43×23mm is a rimless straight-walled handgun cartridge designed by John Moses Browning in 1904, for use in his prototype Colt semi-automatic pistol. After su ...
, large frame
double action Double action (or double-action) refers to one of two systems in firearms where the trigger both cocks and releases the hammer. *Double-action only (DAO) firearms trigger: The trigger both cocks and releases the hammer. There is no single-action ...
revolver A revolver is a repeating handgun with at least one barrel and a revolving cylinder containing multiple chambers (each holding a single cartridge) for firing. Because most revolver models hold six cartridges before needing to be reloaded, ...
s adopted by the
United States Military The United States Armed Forces are the Military, military forces of the United States. U.S. United States Code, federal law names six armed forces: the United States Army, Army, United States Marine Corps, Marine Corps, United States Navy, Na ...
in 1917, to supplement the standard
M1911 pistol The Colt M1911 (also known as 1911, Colt 1911, Colt .45, or Colt Government in the case of Colt-produced models) is a single-action, recoil-operated, semi-automatic pistol chambered primarily for the .45 ACP cartridge. History Early histo ...
during
World War I World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...
. There were two variations of the M1917, one made by Colt and the other by
Smith & Wesson Smith & Wesson Brands, Inc. (S&W) is an American Firearms manufacturer, firearm manufacturer headquartered in Maryville, Tennessee, United States. Smith & Wesson was founded by Horace Smith (inventor), Horace Smith and Daniel B. Wesson as the ...
. They used
moon clip A moon clip is a ring-shaped or star-shaped piece of metal designed to hold multiple cartridges together as a unit, for simultaneous insertion and extraction from a revolver cylinder. Moon clips may either hold an entire cylinder's worth of cart ...
s to hold the cartridges in position, to facilitate reloading, and to aid in extraction, since revolvers had been designed to eject rimmed cartridges and .45 ACP rounds were rimless for use with the
magazine A magazine is a periodical literature, periodical publication, print or digital, produced on a regular schedule, that contains any of a variety of subject-oriented textual and visual content (media), content forms. Magazines are generally fin ...
-fed M1911. After World War I, they gained a strong following among civilian shooters. A commercial rimmed cartridge, the .45 Auto Rim, was also developed, so M1917 revolvers could eject cartridge cases without using moon-clips.


Background

During
World War I World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...
, many U.S. civilian arms companies including Colt and Remington were producing M1911 pistols under contract for the U.S. Army, but even with the additional production there was a shortage of sidearms to issue. The interim solution was to ask Colt and Smith & Wesson, the two major American producers of revolvers at the time, to adapt their heavy-frame civilian revolvers to the standard .45 ACP pistol cartridge. Both companies' revolvers utilized half-moon clips to extract the rimless .45 ACP cartridges.
Daniel B. Wesson Daniel Baird Wesson (May 18, 1825 – August 4, 1906) was an American inventor and firearms designer. He helped develop several influential firearm designs over the course of his life; he and Horace Smith were the co-founders of two companies n ...
's son Joseph Wesson invented and patented the half-moon clip, which was assigned to Smith & Wesson, but at the request of the Army allowed Colt to also use the design free of charge in their own version of the M1917 revolver.


The Smith & Wesson model

The
Smith & Wesson Smith & Wesson Brands, Inc. (S&W) is an American Firearms manufacturer, firearm manufacturer headquartered in Maryville, Tennessee, United States. Smith & Wesson was founded by Horace Smith (inventor), Horace Smith and Daniel B. Wesson as the ...
Model 1917 is essentially an adaptation of the company's .44 Hand Ejector 2nd Model chambered instead in .45 ACP and employing a shortened cylinder and a lanyard ring on the butt of its frame. The S&W M1917 differs from the Colt M1917 in that the S&W cylinder has a shoulder machined into it to permit rimless .45 ACP cartridges to
headspace Headspace may refer to: Science and technology * Headspace gas chromatography, a technique in analytical chemistry * Headspace or ullage, the unfilled space in a container * Headspace technology, the gaseous constituents of a closed space abo ...
on the case mouth (as they do in automatics). The S&W M1917 can thus be used without half-moon clips, though empty .45 ACP cases, being rimless, must be poked out manually through the cylinder face as the extractor star cannot engage them.


The Colt model

Colt had previously produced a version of their .45 Colt caliber New Service model, designated the M1909, to replace their .38 Long Colt caliber M1892 revolvers that had demonstrated inadequate
stopping power Stopping power is the supposed ability of a weapon – typically a ranged weapon such as a firearm – to cause a target (human or animal) to be incapacitated or immobilized. Stopping power contrasts with lethality in that it pertains only to a ...
during the
Philippine–American War The Philippine–American War, known alternatively as the Philippine Insurrection, Filipino–American War, or Tagalog Insurgency, emerged following the conclusion of the Spanish–American War in December 1898 when the United States annexed th ...
. The Colt M1917 revolver was essentially the same as the M1909, but with a cylinder bored to take the .45 ACP cartridge and the half-moon clips to hold the rimless cartridges in position. In early Colt production revolvers, attempting to fire the .45 ACP without the half-moon clips was unreliable at best, as the cartridge could slip forward into the cylinder and away from the firing pin. Later production Colt M1917 revolvers had headspacing machined into the cylinder chambers, just as the Smith & Wesson M1917 revolvers had from the start. Newer production Colts could be fired without the half-moon clips, but the empty cartridge cases had to be ejected with a device such as a cleaning rod or pencil, as the cylinder extractor and ejector would pass over the edge of the rimless cartridges. Firearms developer and writer
Elmer Keith Elmer Merrifield Keith (March 8, 1899 – February 14, 1984) was an American rancher, firearms enthusiast, and author. Keith was instrumental in the development of the first magnum revolver cartridge, the .357 Magnum (1935), as well as the la ...
considered the Colt model "rough finished" and generally not as well made as the Smith and Wesson.


Military service and later use

From 1917 to 1919, Colt and Smith & Wesson produced 151,700 and 153,300 M1917s in total (respectively) under contract with the War Department for use by the
American Expeditionary Force The American Expeditionary Forces (AEF) was a formation of the United States Armed Forces on the Western Front (World War I), Western Front during World War I, composed mostly of units from the United States Army, U.S. Army. The AEF was establis ...
. The revolver saw prolific use by the "
Doughboys "Doughboy" was a popular nickname for the American infantryman during World War I. Though the origins of the term are not certain, the nickname was still in use as of the early 1940s, when it was gradually replaced by "G.I." as the following gene ...
" during World War I, with nearly two-thirds as many M1917s being issued and produced during the war as M1911s were. The military service of the M1917 did not end with the First World War. In November of 1940, the Army Ordnance Corps recorded a total of 96,530 Colt and 91,590 S&W M1917s still in reserve. After being
parkerized Phosphate conversion coating is a chemical treatment applied to steel parts that creates a thin adhering layer of iron, zinc, or manganese phosphates to improve corrosion resistance or lubrication or as a foundation for subsequent coatings or pai ...
and refurbished, most of the revolvers were re-issued to stateside security forces and military policemen, but 20,993 of them were issued overseas to "specialty troops such as tankers and artillery personnel" throughout the course of U.S. involvement in World War II. During the Korean War they were again issued to support troops. The M1917s were even used by members of the " tunnel rats" during the Vietnam War. Overall, the two variants of the M1917 enjoyed over fifty years of service in the U.S. armed forces. The
British Army The British Army is the principal Army, land warfare force of the United Kingdom. the British Army comprises 73,847 regular full-time personnel, 4,127 Brigade of Gurkhas, Gurkhas, 25,742 Army Reserve (United Kingdom), volunteer reserve perso ...
adopted it during World War I, and the
Home Guard Home guard is a title given to various military organizations at various times, with the implication of an emergency or reserve force raised for local defense. The term "home guard" was first officially used in the American Civil War, starting ...
and the
Royal Navy The Royal Navy (RN) is the naval warfare force of the United Kingdom. It is a component of His Majesty's Naval Service, and its officers hold their commissions from the King of the United Kingdom, King. Although warships were used by Kingdom ...
used it during the Second World War. The M1917 was also popular on the civilian and police market. Some were military surplus, while others were newly manufactured. Smith & Wesson kept their version in production for civilian and police sales until they replaced it with their Smith & Wesson Model 22 in 1950. After the War, Naomi Alan, an engineer employed by Smith & Wesson, developed the 6-round full-moon clip. However, many civilian shooters disliked using moon clips. Although full moon clips allow a 1917 to be very quickly reloaded, loading and unloading the clips is tedious, and bent clips can bind the cylinder and cause misfires. For these reasons, in 1920, the Peters ammunition company introduced the .45 Auto Rim. This rimmed version of the .45 ACP allowed both versions of the Model 1917 revolver to fire reliably without the clips. In the late 1950s and 1960s, Colt and Smith & Wesson 1917s were available through mail order companies at bargain prices.


M1937

In 1937, Brazil ordered 25,000 Smith & Wesson M1917s for its military, where they are no longer in service. They can be identified by the large Brazilian crest stamped on their sideplates and are sometimes referred to as the M1937, the Modelo 1937, or the Brazilian-contract M1917. They have altered rear sights, a "Made in U.S.A." stamp on the left sideplate, and most were fitted with commercial-style checkered grips (though some utilized smooth grips left over from the United States contract). These Modelo 1937 revolvers were shipped to Brazil until 1946, and some surplus batches have been re-imported back into the U.S. for commercial sale since then.


Users


See also

*
Service Pistol A service pistol (also known as a standard-issue pistol or a personal ordnance weapon) is any handgun issued to regular military personnel or law enforcement officers. Typically, service pistols are semi-automatic pistols (previously revolvers) ...
*
Smith & Wesson Model 10 The Smith & Wesson Model 10, previously known as the Smith & Wesson .38 Hand Ejector Model of 1899, the Smith & Wesson Military & Police or the Smith & Wesson Victory Model, is a K-frame revolver. In production since 1899, the Model 10 is a six-s ...
*
Smith & Wesson Triple Lock The Triple Lock, officially the Smith & Wesson .44 Hand Ejector 1st Model New Century, is a double-action revolver. It was and is considered by many, including handgun enthusiast and expert Elmer Keith, to be the finest revolver ever made. Its p ...
* Smith & Wesson Model 22 * Smith & Wesson Model 625


References


Further reading

*Field Manual 23-35 Pistols and Revolvers, 26 February 1953 * * * * * *Smith, W.H.B: ''"1943 Basic Manual of Military Small Arms"'' (Facsimile). Stackpole Books, Harrisburg, Pennsylvania (USA), 1979. *Speer Reloading Manual Number 3, Lewiston, Idaho, Speer Products Inc., 1959 *Taylor, Chuck: "The .45 Auto Rim," Guns Magazine, September 2000 * *Venturino, Mike " WWI Classic Returns", Guns Magazine December 2007, San Diego, Publishers Development Corp. 2007 {{DEFAULTSORT:M1917 Revolver Colt revolvers Military revolvers Revolvers of the United States World War I infantry weapons of the United States World War II firearms of the United States .45 ACP revolvers Weapons of the Philippine Army World War II infantry weapons of Brazil