Airsoft guns
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Airsoft guns are replica toy guns used in
airsoft Airsoft is a team game in which participants eliminate opposing players by tagging them out of play with spherical plastic projectiles shot with mock air weapons(usually powered by an electronic motor) called airsoft guns. Although similar ...
sports. They are a special type of low-power smoothbore
air gun An air gun or airgun is a gun that fires projectiles pneumatically with compressed air or other gases that are mechanically pressurized ''without'' involving any chemical reactions, in contrast to a firearm, which pressurizes gases ''chemical ...
s designed to shoot non-metallic spherical projectiles (pb) often colloquially (but incorrectly) referred to as " BBs", which are typically made of (but not limited to)
plastic Plastics are a wide range of synthetic or semi-synthetic materials that use polymers as a main ingredient. Their plasticity makes it possible for plastics to be moulded, extruded or pressed into solid objects of various shapes. This adapta ...
or
biodegradable Biodegradation is the breakdown of organic matter by microorganisms, such as bacteria and fungi. It is generally assumed to be a natural process, which differentiates it from composting. Composting is a human-driven process in which biodegrada ...
resin In polymer chemistry and materials science, resin is a solid or highly viscous substance of plant or synthetic origin that is typically convertible into polymers. Resins are usually mixtures of organic compounds. This article focuses on nat ...
materials. Airsoft gun powerplants are designed to have low
muzzle energy Muzzle energy is the kinetic energy of a bullet as it is expelled from the muzzle of a firearm. Without consideration of factors such as aerodynamics and gravity for the sake of comparison, muzzle energy is used as a rough indication of the de ...
ratings (generally less than 1.5 J, or 1.1 ft⋅lb) and the pellets have significantly less penetrative and
stopping power Stopping power is the 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 weapo ...
s than conventional airguns, and are generally safe for competitive sporting and
recreation Recreation is an activity of leisure, leisure being discretionary time. The "need to do something for recreation" is an essential element of human biology and psychology. Recreational activities are often done for enjoyment, amusement, or plea ...
al purposes if proper protective gear is worn. Depending on the design mechanism for pellet propulsion, airsoft guns can be categorized into two groups: mechanical, which consists of a coil spring-loaded piston
air pump An air pump is a pump for pushing air. Examples include a bicycle pump, pumps that are used to aerate an aquarium or a pond via an airstone; a gas compressor used to power a pneumatic tool, air horn or pipe organ; a bellows used to encourage a ...
that is either manually cocked (e.g. spring guns) or automatically cycled by a
battery Battery most often refers to: * Electric battery, a device that provides electrical power * Battery (crime), a crime involving unlawful physical contact Battery may also refer to: Energy source *Automotive battery, a device to provide power t ...
-powered
electric motor An electric motor is an electrical machine that converts electrical energy into mechanical energy. Most electric motors operate through the interaction between the motor's magnetic field and electric current in a wire winding to generate f ...
gearbox Propulsion transmission is the mode of transmitting and controlling propulsion power of a machine. The term ''transmission'' properly refers to the whole drivetrain, including clutch, gearbox, prop shaft (for rear-wheel drive vehicles), diff ...
(e.g. AEGs); and pneumatic, which operates by valve-controlled release of prefilled bottled gas such as compressed propane mixed with
silicone oil A silicone oil is any liquid polymerized siloxane with organic side chains. The most important member is polydimethylsiloxane. These polymers are of commercial interest because of their relatively high thermal stability, lubricating, and dielect ...
(commonly known as "Green Gas") or CO2 canisters (e.g. GBB guns), more often mistakenly described as rifles. Airsoft guns are often designed to realistically resemble actual guns, making it difficult to distinguish them despite the orange muzzle tips in some jurisdictions. This has led to police shootings.


Usage

Airsoft in the past was used almost solely for recreational purposes, but in 2012, gas blowback (GBB) airsoft technology became adopted by US federal and state institutions as an affordable and reliable tactical training tool for close quarters battles. In 2018, the
United States Coast Guard The United States Coast Guard (USCG) is the maritime security, search and rescue, and law enforcement service branch of the United States Armed Forces and one of the country's eight uniformed services. The service is a maritime, military, m ...
officially adopted SIG-branded P229 airsoft pistol for training. The GBB guns allow for correct weapon manipulation drills, muscle memory training, stress inoculation and force-on-force simulations for a fraction of the cost of conventional bolt conversion kits that use marking cartridges with wax bullets from training ammunition manufacturers such as UTM and Simunition. Airsoft guns also allow basic and advanced shooter training in a safer environment by reducing the risks of accidental injury or death from a negligent discharge. There are clubs, teams, and even athletic associations devoted to airsoft events around the world. Europe is home to some of the largest events, with skirmishes of over 2,000 people participating. In North America, in 2012 alone,
Fulda Gap The Fulda Gap (german: Fulda-Lücke), an area between the Hesse-Thuringian border (the former Inner German border) and Frankfurt am Main, contains two corridors of lowlands through which tanks might have driven in a surprise attack by the Sovi ...
Airsoft Game in
Taylorsville, North Carolina Taylorsville is a town in Alexander County, North Carolina, United States. The population was 2,098 at the 2010 census. It is the county seat of Alexander County. Taylorsville is part of the Hickory– Lenoir– Morganton Metropolitan St ...
had over 1,100 participants, and Operation Lion Claws Military Simulation Series (OLCMSS) had 800 people attend at George Air Force Base in Victorville, California. American Mil-sim, Black Sheep, and Ballahack also host large games. The attraction of the larger games is due to the intensity and variety in equipment that is used, ranging from small arms to armored vehicles. In many countries, every airsoft gun owner and active enthusiast must be affiliated with an accredited airsoft association or federation. Most airsoft players host games at a registered field where combat situations are simulated using airsoft weaponry like replica pistols, submachine guns, carbines/ assault rifles, DMRs/ sniper rifles,
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, grenades and
landmine A land mine is an explosive device concealed under or on the ground and designed to destroy or disable enemy targets, ranging from combatants to vehicles and tanks, as they pass over or near it. Such a device is typically detonated automati ...
s. Great variety and profusion of militaria is usually used. Historical reenactment of famous war situations is another favorite of many airsoft players and clubs. In addition, a number of companies such as
Systema Engineering Systema Engineering is a Japanese manufacturer of airsoft internal parts, and airsoft gun replicas of real firearms for use as a safe, low cost substitute in simulated live fire training.{{cite web, title=What is Systema Engineering?, url=http://w ...
and Celsius Technology manufacture ultra-realistic high-velocity airsoft rifles designed specifically for the police and military for non-lethal training purposes. People today can also use it as
props A prop, formally known as (theatrical) property, is an object used on stage or screen by actors during a performance or screen production. In practical terms, a prop is considered to be anything movable or portable on a stage or a set, distinc ...
for film making.


Types


Spring-powered

Spring-powered airsoft guns (or "air-cocking guns" as called by Tokyo Marui) are single-shot devices that use the elastic potential energy stored within a compressed coil spring to drive a piston air pump, which is released upon trigger-pull and rapidly pressurizes the air within the pump cylinder to in turn "blow" pellets down the
gun barrel A gun barrel is a crucial part of gun-type weapons such as small firearms, artillery pieces, and air guns. It is the straight shooting tube, usually made of rigid high-strength metal, through which a contained rapid expansion of high-pres ...
. These guns are almost identical (though simplified and underpowered) in design to spring-piston air guns and have the same operating principles. The user must manually recompress the spring under stress prior to each shot, typically by pulling back the slide (pistols), bolt handle (rifles) or forend pump (shotguns) on the weapon, which cocks and readies the gun. Because of this, spring guns are incapable of automatic or semi-automatic firing by design. Spring-powered airsoft guns are generally not as powerful as gas-powered ones, but are more powerful than electric airsoft guns because stiffer springs can often be used without the worry of overloading any motor-gearbox, although some spring
shotgun A shotgun (also known as a scattergun, or historically as a fowling piece) is a long-barreled firearm designed to shoot a straight-walled cartridge known as a shotshell, which usually discharges numerous small pellet-like spherical sub- pr ...
s and
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 can be very powerful with
muzzle velocities Muzzle velocity is the speed of a projectile (bullet, pellet, slug, ball/shots or shell) with respect to the muzzle at the moment it leaves the end of a gun's barrel (i.e. the muzzle). Firearm muzzle velocities range from approximately to i ...
up to . Spring guns are generally inexpensive (except the high-power sniper rifles and shotguns), and may not last long (depending on the build quality) due to the tension exerted on the gun parts by the recoiling of a powerful spring. However, many spring guns can be modified and upgraded to last longer and shoot more powerfully. While most electric airsoft guns also use springs to drive the air pump and propel the pellets, they use external power sources and are not considered to be in the same category as the single-shot manual spring guns. Low-end spring guns tend to be much cheaper than their electric equivalents due to their simplicity and lack of electrical components (
electric motor An electric motor is an electrical machine that converts electrical energy into mechanical energy. Most electric motors operate through the interaction between the motor's magnetic field and electric current in a wire winding to generate f ...
/
actuator An actuator is a component of a machine that is responsible for moving and controlling a mechanism or system, for example by opening a valve. In simple terms, it is a "mover". An actuator requires a control device (controlled by control signal) a ...
, spring-
gearbox Propulsion transmission is the mode of transmitting and controlling propulsion power of a machine. The term ''transmission'' properly refers to the whole drivetrain, including clutch, gearbox, prop shaft (for rear-wheel drive vehicles), diff ...
assembly, as well as battery and battery charger) and thus are widely available. These guns are less suited for competition because they are at a rate-of-fire disadvantage against automatic guns in close combat and do not provide enough accuracy and power for long-range use. There are some exceptions, however, as higher-end spring-powered airsoft rifles can be quite expensive; these guns are typically suited for "marksman" applications in airsoft matches and provide competitive muzzle velocities. Additionally, pump shotguns are sometimes used for both short and long range engagements. In colder weather, spring pistols are more reliable than gas-powered pistols and even the batteries on automatic electric pistols (AEPs) both of which can be adversely affected by extremely low temperatures. This represents one of the major advantages of spring airsoft gun, as it can be fired in practically any situation without relying on
batteries Battery most often refers to: * Electric battery, a device that provides electrical power * Battery (crime), a crime involving unlawful physical contact Battery may also refer to: Energy source *Automotive battery, a device to provide power t ...
or bottled gas. This independence from external power sources causes some players to favor spring-powered guns. Spring guns are also less susceptible to the effects of water, where a battery-powered gun could short-circuit and malfunction when wet. Spring-powered weapons are often cheaper than electric or gas-powered weapons. They are also more readily available in most department stores. Because of their low price, availability, and simplicity, spring guns tend to act as "training guns" to bring new players to airsoft games and are considered the primary weapon of "backyard skirmishes". In the UK, they are affectionately known as "springers" and were often a player's introduction to the sport due to the entry-level cost in comparison to AEG and GBB weapons. Almost all airsoft players at some point owned a spring weapon, whether for its actual use in a competitive event or for the replica value since some airsoft weapons are only available as spring versions. However, some veteran airsoft players still rely on sniper rifle and
shotgun A shotgun (also known as a scattergun, or historically as a fowling piece) is a long-barreled firearm designed to shoot a straight-walled cartridge known as a shotshell, which usually discharges numerous small pellet-like spherical sub- pr ...
-type spring guns as a primary weapon due to their reliability, high power, high accuracy, and low noise, as well as their ease of repair and modification compared to AEGs and GBB guns.


Battery-powered


Automatic electric guns

Electrically powered airsoft guns use a spring-loaded piston pump just like spring guns, but instead of manual operation they typically use portable
rechargeable A rechargeable battery, storage battery, or secondary cell (formally a type of energy accumulator), is a type of electrical battery which can be charged, discharged into a load, and recharged many times, as opposed to a disposable or pri ...
battery packs to power an internal
electric motor An electric motor is an electrical machine that converts electrical energy into mechanical energy. Most electric motors operate through the interaction between the motor's magnetic field and electric current in a wire winding to generate f ...
, which transmit through a
gearbox Propulsion transmission is the mode of transmitting and controlling propulsion power of a machine. The term ''transmission'' properly refers to the whole drivetrain, including clutch, gearbox, prop shaft (for rear-wheel drive vehicles), diff ...
to compress the pump spring and propel the pellets via the compression of air and load the pellets in a cyclic fashion . Selective fire options among automatic, 3-round burst and semi-automatic operations are all possible, which gives these guns the popular name "automatic electric guns", or AEGs. These guns often attain muzzle velocities from and rates of fire (RoF) between 100 and 1500 rounds per minute. They are the most commonly used and widely available type of airsoft gun. The AEGs were developed in
Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the n ...
and the Japanese company Tokyo Marui is credited with creating the original gearbox system. In a Tokyo Marui AEG, the motor drives a
train In rail transport, a train (from Old French , from Latin , "to pull, to draw") is a series of connected vehicles that run along a railway track and transport people or freight. Trains are typically pulled or pushed by locomotives (often ...
of three gears mounted inside a gearbox, which then loads a pump piston against a spring. Once the spring is released, it pushes the piston plunger forward through the pump cylinder to propel a pellet resting within the
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 ...
forward through the barrel and out of the muzzle. Many manufacturers have now more or less replicated this basic model, adding reinforced parts or minor improvements. The electric airsoft guns were powered primarily by nickel-metal hydride (NiMH) batteries with varying
voltage Voltage, also known as electric pressure, electric tension, or (electric) potential difference, is the difference in electric potential between two points. In a static electric field, it corresponds to the work needed per unit of charge to ...
s and
milliampere-hour An ampere hour or amp hour (symbol: A⋅h or A h; often simplified as Ah) is a unit of electric charge, having dimensions of electric current multiplied by time, equal to the charge transferred by a steady current of one ampere flowing fo ...
ratings. The most common battery is an 8.4 V large battery pack, with a capacity between 2200 and 5000 mAh. Also available are "mini" and "stick" batteries, which generally have 900 ~ 1600 mAh capacities. Voltages for NiMH batteries range from 7.2 V to 12 V. The usual rule of thumb is that the higher the mAh rating, the longer the battery lasts; the higher the voltage, the higher the rate of fire. Recently, however, the more energy-dense
lithium polymer A lithium polymer battery, or more correctly lithium-ion polymer battery (abbreviated as LiPo, LIP, Li-poly, lithium-poly and others), is a rechargeable battery of lithium-ion technology using a polymer electrolyte instead of a liquid electro ...
(Li-Po) batteries are becoming more popular in the airsoft world, since they last longer, have higher mAh and voltages, and can be charged more frequently without concerns for
voltage depression Memory effect, also known as battery effect, lazy battery effect, or battery memory, is an effect observed in nickel-cadmium rechargeable batteries that causes them to hold less charge. It describes the situation in which nickel-cadmium batter ...
, while at the same time being small and lightweight. Li-Po batteries are usually rated at 7.4 V or 11.1 V, and varying between 500 mAh and 6500 mAh. External modifications, such as metal bodies and reinforced plastics that make AEGs look and feel even more realistic, have become very popular. AEG manufacturers such as Classic Army and Tokyo Marui produce replicas that are visually nearly identical to their real counterparts. Tokyo Marui uses an ABS plastic, whereas Classic Army features full metal bodied guns and stronger furnishings. Most AEGs produced as of late are designed to be as visually realistic as possible. The three most common AEGs on the field are the AR-15 series (such as
M16 rifle 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-r ...
,
M4 carbine The M4 carbine (officially Carbine, Caliber 5.56 mm, M4) is a 5.56×45mm NATO, gas-operated, magazine-fed carbine developed in the United States during the 1980s. It is a shortened version of the M16A2 assault rifle. The M4 is extensive ...
, etc.; sometimes referred to as the
ArmaLite ArmaLite, or Armalite, is an American small arms engineering company, formed in the early 1950s, in Hollywood, California. Many of its products, as conceived by chief designer Eugene Stoner, relied on unique foam-filled fiberglass butt/stock fu ...
or Colt series), the H&K MP5 series, and the AK or Kalashnikov series. Also increasing popular is the H&K G36 and more recently, FN P90 and
H&K MP7 The Heckler & Koch MP7 (German: ''Maschinenpistole 7'') is a personal defense weapon chambered for the HK 4.6×30mm armor-piercing cartridge designed by German defence manufacturer Heckler & Koch. It was designed (together with the new cartri ...
. Subsequently, numerous parts for repairs and modifications are commonly available for these rifles. AEG models range from a simple pistol to a rocket propelled grenade all the way to a minigun.


Low powered electric guns

Some airsoft guns are called ''low powered electric guns'' (LPEGs) to distinguish them from the original, more expensive and more powerful AEGs even though their mechanical/electrical design and operation is similar. They are not to be confused with '' mini electrics'' (described below). Originally they were only of novelty value, often regarded below spring-operated guns due to their construction and low velocities. Since there are spring action guns that can notably outperform the true low-end LPEGs and can be found at comparable prices, they are generally considered to be better choices.


Medium price electric guns

Some companies – like UTG with their popular MP5 and AK-47 models – have improved their quality to such an extent that some models are now considered simply as mid-ranged AEGs that are more affordable but still reasonably effective. Among airsofters, these are commonly called middle priced electric guns (MPEGs).


Electric blowbacks

Electric blowbacks, also known as EBBs, are high-end AEGs which generally run from a rechargeable 9.6 volt battery. Most models utilizing this system are rifles. EBBs simulate the blowback action of a real pistol or rifle but generally have less of a kick. Essentially an AEG in design, EBBs are just as powerful. However, a drawback to having the blowback feature is that the battery is quickly depleted, additionally blowbacks can cause extra stress on the gear box which may result in the gearbox's shorter life span. The blowback system can be disabled with some tinkering. Electric blowback can also refer to a feature in some higher-end guns which offers more realistic operation.


Automatic electric pistols

Automatic electric pistols, abbreviated AEPs, were first introduced by Tokyo Marui in 2005 with their Glock 18C (followed later by a Beretta 93R model). They were the first handguns to incorporate an electrically powered system that is capable of fully automatic operation. In cold weather, AEPs are often considered better sidearms than gas powered pistols, because batteries are not as badly affected by frigid weather. Gases like CO2 and
green gas Airsoft guns are replica toy guns used in airsoft sports. They are a special type of low-power smoothbore air guns designed to shoot non-metallic spherical projectiles (pb) often colloquially (but incorrectly) referred to as " BBs", which are ...
are stored in liquid form and require heat in order to vaporize. A gas pistol at will usually only get one to two usable shots from a full magazine, and even will be at reduced power because of the lowered pressure of the gas. Because the AEP gearbox and battery are smaller, the velocity of AEP BBs (usually between 200 and ) is relatively slow by the standards of airsoft simulations, rendering them useful only for close-range simulation. However, the advanced hop up units on these new guns tend to compensate for the low power and can produce an effective range comparable to those of an AEG. CYMA has made a clone Glock 18C, which is a lower priced alternative. An AEP differs from electric blow-backs because the AEP has a fixed slide (in which there is no external movement of the slide during operation), while an EBB simulates the "blow back" action in the slide experienced in a real pistol or Gas Blow Back (GBB). An AEP, however, has much more power and accuracy. One of the newer AEP-styled guns is the Marui replica of the Heckler & Koch
MP7 The Heckler & Koch MP7 ( German: ''Maschinenpistole 7'') is a personal defense weapon chambered for the HK 4.6×30mm armor-piercing cartridge designed by German defence manufacturer Heckler & Koch. It was designed (together with the new cart ...
. It is considerably larger than either of the other guns, and can be upgraded to a much higher power through the use of an external battery, but uses the same system as the AEP, so the classification is ambiguous. It is slightly more powerful than the others and is a suitable choice for CQB (Close Quarter Battle) games due to its small size and decent barrel- to gun-length ratio. Some semi-automatic pistols can be modified to be automatic pistols. To make them more effective, they use rechargeable batteries supplied with the gun, and can be replaced with a larger battery to make their ROF higher. Due to restrictions on size, either the electric motor or batteries have to occupy space in the hand grip, reducing the available space for a magazine. Because of this, most AEPs do not use a full size magazine found in most gas powered pistols. In addition, most AEPs are constructed almost entirely of plastic and have a light, toy-like feeling to them.


Gas-powered


Gas blowback

Gas-powered airsoft guns use the pneumatic
potential energy In physics, potential energy is the energy held by an object because of its position relative to other objects, stresses within itself, its electric charge, or other factors. Common types of potential energy include the gravitational potenti ...
stored within compressed gas to drive the shooting mechanism, and thus operate according to an entirely different design principle to spring- or electrically powered airsoft guns. The most common type seen is the gas blowback (GBB) guns. These gas guns use an internal canister (usually within the magazine) that upon trigger-pull releases the prefilled bottled gas via a series of valves to propel the pellet and generate a blowback, which simulates recoil and cyclically loads the next shot. They are capable of both automatic and semi-automatic operation. The most common gases used are "
green gas Airsoft guns are replica toy guns used in airsoft sports. They are a special type of low-power smoothbore air guns designed to shoot non-metallic spherical projectiles (pb) often colloquially (but incorrectly) referred to as " BBs", which are ...
" and propane which requires an adaptor. HFC-134a is also commonly used, particularly with pistols which have plastic sliders due to the lower pressure giving a smaller chance of damage to the weaker slide. Less commonly used gases include "red gas" (which is actually HCFC-22), CO2 and
nitrogen Nitrogen is the chemical element with the symbol N and atomic number 7. Nitrogen is a nonmetal and the lightest member of group 15 of the periodic table, often called the pnictogens. It is a common element in the universe, estimated at se ...
/high-pressure air. However it is unlawful to use HCFC-22 as a propellant in the US, as it is a Class II
ozone-depleting substance Ozone depletion consists of two related events observed since the late 1970s: a steady lowering of about four percent in the total amount of ozone in Earth's atmosphere, and a much larger springtime decrease in stratospheric ozone (the ozone la ...
and its use as an aerosol propellant has been banned since January 1994 under section 610(d) of Clean Air Act. Red gas is usually avoided unless the airsoft gun has undergone modification, as its relatively high critical pressure can cause damage to the airsoft gun, such as breakage of the slide or bolt. CO2, nitrogen, and high pressure air are less common because they need to be stored at higher pressures than "green gas" or HFC-134a. The first ever gas powered airsoft guns were commonly referred to as "classic" guns, owing to their age. These guns were most commonly powered by liquid propellants such as R-12 (which was marketed by the Japanese as FLON-12 or
DuPont DuPont de Nemours, Inc., commonly shortened to DuPont, is an American multinational chemical company first formed in 1802 by French-American chemist and industrialist Éleuthère Irénée du Pont de Nemours. The company played a major role in ...
tradename Freon 12) CFC feeding system with a majority of the configurations containing two tanks, one containing the R-12 and one used as an expansion tank, and the gun itself. R-12 was a commonly used refrigerant for car air conditioning and refrigerators, and is considered a highly potent ozone-depleting substance and listed as a Class I Ozone Depleting Substance by the US EPA. Its use as a general purpose aerosol propellant has been banned by the US EPA since March 1978 under 43 FR 11301 for use in aerosol use with a very few exceptions. Its use is also banned in many countries under United Nations treaties. On December 31, 2008, the use of CFCs for medical inhalers were banned. Later users modified these old guns to be powered by regulated CO2 canisters or nitrogen/high pressure air bottles to increase power and consistency. However, these guns have largely been superseded by the newer and more versatile AEGs, or automatic electric guns. One of the reasons for this is because the most commonly available propellant, R-12, is costly. Additionally, at high flow rates, liquid propellants tend to cool down, eventually freezing. As cooldown progresses, the rate of fire gradually decreases until the gun ceases operation. The user would then be forced to wait for the propellant to warm up again. CO2 is not affected as badly by this tendency, and nitrogen/high pressure air is immune to it. Furthermore, if liquid propellant is introduced into the gun's mechanism, rubber parts can freeze and eventually damage the gun. However, it is unlikely for this to occur since once the gas is released from the containing cylinder it instantly turns back into its gaseous state, and expands rapidly. It is doubtful whether the retained pressure behind the BB before it begins to accelerate down the barrel is enough to keep the gas in a liquid form. Also, any gun that is expected to be exposed to the intense cold of de-pressurizing gas should have materials that can handle it. Gas power tends to be used in airsoft pistols where size constraints make electric-powered mechanisms impractical. Other instances where gas is favored are where adjustable velocities are required or where a blowback feature is desired. A blowback feature is a mechanism which cycles a slide or bolt to better simulate a real firearm's operation. Because of the mechanical complexities involved with distributing and regulating gas, these guns have largely given way to electric guns for less specialized applications, however, they still remain favorable amongst most airsofters. They are not just limited to pistols; submachine guns, sniper rifles and assault rifles commonly use gas mechanisms. Whilst the submachine gun replicas typically feature a blowback mechanism similar to the pistol replicas, sniper rifle replicas usually omit the blowback mechanism in favor of reduced recoil and increased muzzle velocity. Along with using gas to power guns, it is also applied for use in replica grenades. These grenades are either projectiles, fired from a grenade launcher such as the M203 or GP-25, or throwable. The shells work on the system of an internal piston, filled with gas. Either a series of BB's or in some cases a rubber or soft foam head is seated in or on top of the shell. When the pressure is released the projectile(s) are shot from the launcher sent downrange. In the case of the throwable grenades, inside the grenade there is a similar piston to the one used in the shells, but is on a literal "timer" that allows the user to clear the area of effect. BB's or powder act as the projectile in the case of these grenades. Currently both types of grenades are not very common, mostly because grenade launchers are quite expensive and the throwable grenades are not very reliable.


High pressure air systems

High pressure air (HPA) systems are a type of pneumatic airsoft weapon that use externally supplied high pressure air instead of internal gas canisters like the majority of gas-operated airsoft guns. They work by using a separate high-pressure air tank that is connected to the airsoft gun with a hose, which is connected with a pneumatic motor inside the gun (called an "engine") at where the gearbox would be in a normal electric airsoft gun. The engine is powered by a fire control unit that can adjust to the desired rates of fire as well as the
dwell Dwell may refer to: * ''Dwell'' (album), a 2020 album by Recondite * ''Dwell'' (magazine), a monthly American publication focused on modern architecture and design * Dwell (retailer), a leading UK furniture and accessories company * "Dwell" (so ...
that determines how much air is released with each individual shot. There are several types of HPA systems and they vary in both price and performance. Popular HPA brands and engines include PolarStar (Fusion Engine, F1, Jack), Wolverine (Hydra, Bolt, Inferno, Wraith, SMP), Valken (V12), and Tippmann (M4 Carbine) It is not definitive which style is more effective. It is more up to personal preference.


Hybrid guns

Hybrid airsoft guns are the newest type of airsoft guns on the market. They are basically standard AEGs or GBB guns with a "little extra reality" built in, and are usually more powerful. * AEG hybrid operation: The magazine is loaded with shell cases, each containing a single plastic pellet. These shell casings can have a small red cap, the same as those found in any child's toy cap gun placed on the top of them. These hybrid guns feature an electrically powered, full blowback system and operate on a "round-per-shell" basis such that for every pellet fired, a shell casing is ejected and the cap is fired providing a realistic sound and smoke effect. Since its debut, the only hybrid guns seen on the market are TOP M4A1, as well as
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 ...
, Kar98, and other rifle models. These guns are the least common type of gun on the market today and are generally used by collectors and re-enactors rather than skirmishers. * Gas blowback hybrid operation: Hybrid gas blowback airsoft guns are quite similar with hybrid AEGs and their operations are similar with ordinary gas blowback airsoft guns. A single 6 mm pellet is still loaded to a shell casing. Then it is placed into a magazine. The airsoft replica itself also has a tank for compressed gas as propellant (such as
green gas Airsoft guns are replica toy guns used in airsoft sports. They are a special type of low-power smoothbore air guns designed to shoot non-metallic spherical projectiles (pb) often colloquially (but incorrectly) referred to as " BBs", which are ...
). So as the slide/ bolt is pulled back, it loads a shell into the chamber. As the trigger is pulled, it releases a small burst of propellant and the pellet is forced out the barrel.


Training weapons

Airsoft gun manufacturer
Systema Engineering Systema Engineering is a Japanese manufacturer of airsoft internal parts, and airsoft gun replicas of real firearms for use as a safe, low cost substitute in simulated live fire training.{{cite web, title=What is Systema Engineering?, url=http://w ...
(PTW) developed a line of airsoft guns and accessories intended for military and law enforcement training. These airsoft guns are made of aircraft-grade
aluminum Aluminium (aluminum in American and Canadian English) is a chemical element with the symbol Al and atomic number 13. Aluminium has a density lower than those of other common metals, at approximately one third that of steel. It ha ...
combined with
stainless steel Stainless steel is an alloy of iron that is resistant to rusting and corrosion. It contains at least 11% chromium and may contain elements such as carbon, other nonmetals and metals to obtain other desired properties. Stainless steel's r ...
parts that gives strength, stability, weather protection, and easy maintenance. These training weapons offer a more realistic display of military weapons. Unfortunately they have been plagued by reliability problems and parts availability. They have also had models banned from the US for being capable of being converted into real firearms. Two manufactures, King Arms and KWA, came out with ATF-approved gas blowback
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 ...
replicas that allowed for correct weapons tear down, manipulation and function that were designed for military use, but were also legal for US citizens to own. The King Arms model required upgrade parts out of the parts to give it reliability, though the KWA was plagued by a weak hop-up system, but otherwise reliable. In November 5, 2018, the
United States Coast Guard The United States Coast Guard (USCG) is the maritime security, search and rescue, and law enforcement service branch of the United States Armed Forces and one of the country's eight uniformed services. The service is a maritime, military, m ...
, which has long used the .40 caliber
SIG P229 Sig used as a name may refer to: *Sig (given name) * Sig, Algeria, a city on the banks of the Sig River * Sig Alert, an alert for traffic congestion in California, named after Loyd Sigmon *Sig River, a river of Algeria also known as Mekerra sig ( ...
as its duty sidearm, announced that it will acquire the SIG ProForce P229 CO2 airsoft pistol (which was then produced under brand licensing by French
airsoft Airsoft is a team game in which participants eliminate opposing players by tagging them out of play with spherical plastic projectiles shot with mock air weapons(usually powered by an electronic motor) called airsoft guns. Although similar ...
manufacturer CyberGun, before SIG later ceased external licensing and took over the production in early 2019) as its new training pistol to give cadets and guardsmen the ability to practice gun handling, conduct target practice in various environments, and train in realistic force-on-force scenarios.


Performance

Airsoft guns shoot plastic pellets at velocities from for a low-end spring pistol, to for heavily upgraded customized sniper rifles. Most non-upgraded AEGs are in the middle, producing velocities from to . The internal components of most guns can be upgraded which can increase the pellet velocity significantly. Using heavier pellets (.25 g, .3 g, etc.) will significantly reduce the gun's muzzle velocity, but can increase accuracy at range and reduce susceptibility to wind drift. Lighter pellets have less kinetic energy than their heavier pellets, despite their higher exit velocity. Decreasing the pellet's weight does not generally increase its range. A common upgrade done by players is in the " hop-up" system, featured in most mid- to high-end AEG's, as well as gas guns and spring sniper rifles. In this system, the wall of a rubber tube, called a bucking, is forced into the upper path of the pellet right before it begins flying down the inner barrel. This contact imparts backspin, which in turn gives the pellet a Magnus lift to maintain a flatter trajectory for a longer period of time. This is adjusted by screws or gears that cause the bucking to only show a small or large presence in the barrel. Different degrees of firmness of the rubber are considered when a hop-up is being upgraded.


Safety

Airsoft is safe when played with proper protective gear. Most airsoft guns on the market are usually below , but projectiles expelled from any type of airsoft gun can travel as slow as to more than and are capable of breaking skin at . For example, skirmish play in the United Kingdom has a maximum of 350 ft/s, with some airsoft locations having a limit as low as 290 ft/s. If under , the hit would have to be within a short range. Blood can be drawn, but injuries that do occur are predominantly superficial. Full-seal protective eyewear (goggles or glasses) is widely considered the minimum protection for airsoft players, as the eyes may be injured by any type of impact. The least amount of protection a player should seek will meet or exceed ANSI/ISEA Z87.1 standards, which indicates the eyewear is rated for ballistic strikes. Mesh eyewear has also seen some limited use by players due to low cost and its inability to fog, although it has drawn some criticism for its non-impact rated construction and vulnerability to debris. Some impacts (particularly at close range with powerful guns) are capable of cracking or damaging teeth. Dentists have reported broken teeth that require root canal and crowns to repair damage. A face mask (like that used for paintball) is recommended to protect eyes and teeth. Metallic mesh masks and mouth guards have recently seen popular use. There are legal issues in airsoft as well as several rules imposed in a game by game basis. Most indoor airsoft fields only allow up to , and most outdoor fields begin capping near the 410 ft/s (125 m/s) for rifles and 525 ft/s (160 m/s) for long-range guns such as sniper rifles. Most outdoor fields also impose a minimum engagement distance for guns firing over a certain range, normally for squad support weapons and sniper rifles. In order for an airsoft gun to cause any serious injury, it would have to be well over these limits and in close proximity. To even reach such speeds, the gun would have to be highly modified. So it is therefore unlikely to cause permanent or serious damage with any stock airsoft gun. The use of metallic BBs, or any foreign objects, is very dangerous for the user and other people and property in close vicinity, and may damage the airsoft gun as well. However, specially designed and built metallic 6 mm BBs for airsoft guns can be found on the market. These metallic BBs should not be used for airsoft play because they can break through goggles and other safety gear. Plastic BBs can be a mixture of PLA and Plastic causing less damage to persons. Although airsoft guns in the United States are generally sold with a 6 mm (0.24in.) or longer orange tip on the barrel in order to distinguish them from real firearms, this is not in fact required by federal law. There is some controversy on this topic as Title 15 of the Code of Federal Regulations, on foreign commerce and trade, stipulates that "no person shall manufacture, enter into commerce, ship, transport, or receive any toy, look-alike, or imitation firearm" without approved markings; these may include an orange tip, orange barrel plug, brightly colored exterior of the whole toy, or transparent construction (part 272.2, formerly part 1150.2). However, section 272.1 (formerly 1150.1) clearly indicates that these restrictions shall not apply to "traditional b-b, paint-ball, or pellet-firing air guns that expel a projectile through the force of compressed air, compressed gas or mechanical spring action, or any combination thereof." Local laws may differ by jurisdiction. Full or partial preventive painting of airsoft guns as a legal obligation to avoid confusion of the airsoft replicas with real lethal weapons is in practice in several jurisdictions around the world. A common controversy referred to as ''"Pumping"'' or ''"Roping"'' is the act of purposely cheating and/or firing 20+ airsoft rounds at one player until they run away or submit in pain. Popular videos such as ''"Rip Kid"'' and ''"SC Trip 2015"'' have both documented the act of ''"pumping".'' Many are concerned over the safety of the player(s) on the other end, as well as their probability of returning to the hobby. Several Airsoft Arenas/Fields across the US have implemented strict "Semi Auto Fire Only" rules, as well as other rules aimed at deterring players who come out and intend to harm other players.


Police shootings

*On January 13, 2006, Christopher Penley, a 15-year-old student with an airsoft gun painted entirely black, was killed by a SWAT team member at Milwee Middle School in Longwood, Florida. *On October 22, 2013, in
Santa Rosa, California Santa Rosa ( Spanish for " Saint Rose") is a city and the county seat of Sonoma County, in the North Bay region of the Bay Area in California. Its estimated 2019 population was 178,127. It is the largest city in California's Wine Country and ...
, 13-year-old
Andy Lopez Andrew Lopez (born November 30, 1953) is a retired American college baseball coach. He was most recently the head baseball coach at University of Arizona, and has served as the head baseball coach at Cal State Dominguez Hills, Pepperdine, and F ...
was shot by a Sonoma County sheriff's deputy Erick Gelhaus. Lopez was walking with other children and carrying an airsoft gun that was designed to resemble an AK-47 assault rifle. Gelhaus opened fire, killing Lopez with seven bullets. *On August 5, 2014, John Crawford, while handling a BB gun in a Walmart store near
Dayton, Ohio Dayton () is the List of cities in Ohio, sixth-largest city in the U.S. state of Ohio and the county seat of Montgomery County, Ohio, Montgomery County. A small part of the city extends into Greene County, Ohio, Greene County. The 2020 United S ...
, was shot to death by Beavercreek Police. *On November 22, 2014 in
Cleveland Cleveland ( ), officially the City of Cleveland, is a city in the United States, U.S. U.S. state, state of Ohio and the county seat of Cuyahoga County, Ohio, Cuyahoga County. Located in the northeastern part of the state, it is situated along ...
, Ohio, Tamir Rice, a 12-year-old boy with an airsoft gun, was shot and killed by police. After a 911 caller reported a juvenile male with a "probably fake" gun on a playground, police arrived on the scene, but had not been told by the dispatcher that the gun may have been fake. Police reported that they asked the boy to show his hands, but he reached for his waistband instead. The police fatally shot him within two seconds of arriving on the scene. Police later said that the orange tip indicating the gun was a toy had been removed. *On November 25, 2014, police in Vancouver, Washington reported to the scene of a domestic dispute to find 31-year-old Sebastian T. Lewandowski with an airsoft replica of an AR-15. When he refused to put down what appeared to be an AR-15, the officers fired at Lewandowski. He died at the scene. *On January 15, 2019, police in Tempe, Arizona shot and killed a 14 year old boy, Antonio Arce, who was carrying a replica 1911 airsoft gun. The officer’s body camera picked up the officer, after the shooting, saying, "Fuck man, he's just a fucking kid. It's a fucking toy gun," *On April 13, 2021, Maryland State Police, responding to 911 calls of a suspicious gunman, fatally shot a 16-year old boy, Peyton Ham, in Leonardtown, Maryland, after he pointed an airsoft gun at a state trooper. *On December 15, 2021, San Pablo police shot and killed a man who was carrying an airsoft gun they thought was a real gun.


Trademark problems

Some airsoft guns can be such accurate replicas that they violate
intellectual property Intellectual property (IP) is a category of property that includes intangible creations of the human intellect. There are many types of intellectual property, and some countries recognize more than others. The best-known types are patents, co ...
laws (specifically those regarding
trademark A trademark (also written trade mark or trade-mark) is a type of intellectual property consisting of a recognizable sign, design, or expression that identifies products or services from a particular source and distinguishes them from ot ...
s), most notably some models from Tokyo Marui bearing Colt or Heckler & Koch trademarks that may not be imported into the United States. Certain companies such as Classic Army or ICS avoid this problem by licensing their replicas from the original manufacturers such as
ArmaLite ArmaLite, or Armalite, is an American small arms engineering company, formed in the early 1950s, in Hollywood, California. Many of its products, as conceived by chief designer Eugene Stoner, relied on unique foam-filled fiberglass butt/stock fu ...
by license from ActionSportGames or Olympic Arms. The airsoft company ActionSportGames has licensed trademark rights from many well-known firearm manufacturers, such as Armalite, Dan Wesson, CZ,
Steyr Steyr (; Central Bavarian: ''Steia'') is a statutory city, located in the Austrian federal state of Upper Austria. It is the administrative capital, though not part of Steyr-Land District. Steyr is Austria's 12th most populated town and the 3r ...
, STI, B&T and Franchi. Another company who licence the designs of gun companies is Evolution International. It has a portfolio of exclusive licences from ADC Armi Dallera Custom, TangoDown, Z-M Weapons, DSR precision, Lone Star Tactical, and SAR. In addition, there have been reports of companies taking action in defense of their intellectual property rights. Some end users have made attempts to sell their guns, some in the style of
Glock Glock is a brand of polymer- framed, short recoil-operated, locked-breech semi-automatic pistols designed and produced by Austrian manufacturer Glock Ges.m.b.H. The firearm entered Austrian military and police service by 1982 after it was ...
pistols, only to find Glock blocking the sale and threatening legal action. In addition to these actions, Glock, as well as Heckler & Koch, have blocked the sale, trade and distribution of replicas bearing resemblance to their products. Recently, Glock gave the licensing to the Glock name and likeness to Elite Force/Umarex to produce replica models of the real Glock series of firearms. The
United States Coast Guard The United States Coast Guard (USCG) is the maritime security, search and rescue, and law enforcement service branch of the United States Armed Forces and one of the country's eight uniformed services. The service is a maritime, military, m ...
, which has long used the .40 caliber
SIG P229 Sig used as a name may refer to: *Sig (given name) * Sig, Algeria, a city on the banks of the Sig River * Sig Alert, an alert for traffic congestion in California, named after Loyd Sigmon *Sig River, a river of Algeria also known as Mekerra sig ( ...
as its duty sidearm, announced on November 5, 2018 that it will acquire the SIG Air ProForce P229 airsoft pistol (then produced under brand licensing by French airsoft manufacturer CyberGun) as a training pistol for cadets and guardsmen. In response, SIG Air, SIG Sauer's airgun division, announced on January 17, 2019 that it was introducing its own in-house ProForce airsoft line for professional training, with the initial offerings include the M17 and P229 airsoft pistol. SIG Air also announced that "we are rapidly expanding the SIG AIR business, and it is important to us to assume full control to ensure all SIG Air products are of the highest quality", and it would no longer be licensing the "SIG" brand or trademarks for sale by commercial airsoft manufacturers.


See also

* Airsoft pellets *
Hop-up (airsoft) Hop-up {{cite book, author=Kovacs Bloomfield, title=Airsoft! How to Win an Airsoft War: Secret Tactics for Success Revealed!, url=https://books.google.com/books?id=Y8tuufbh_NAC&pg=PA20, date=1 March 2012, publisher=Ebook.GD Publishing, isbn=978-1- ...
* Legal issues in airsoft *
Air gun An air gun or airgun is a gun that fires projectiles pneumatically with compressed air or other gases that are mechanically pressurized ''without'' involving any chemical reactions, in contrast to a firearm, which pressurizes gases ''chemical ...
* BB gun * Paintball *
Gel ball shooter A gel blaster, also known as a gel gun, gel shooter, gel marker, hydro marker, hydro blaster, water bead blaster or gelsoft, is a toy gun similar in design to airsoft guns, but the projectiles they shoot are superabsorbent polymer water beads ...
* Entertech *
Xploderz Xploderz is a line of toy weapons made by The Maya Group to compete with Hasbro's Nerf Super Soaker line and marketed as a safer alternative to paintball. The concept is based on Orbeez, a girls' toy line also by The Maya Group that uses water ...
*
Nerf Nerf is a toy brand formed by Parker Brothers and currently owned by Hasbro. Most of the toys are a variety of foam-based weaponry, with other Nerf products including balls for sports such as American football, basketball, and baseball. T ...
, brand of toy guns related to airsoft * Toy gun


References

{{reflist, refs= {{cite web, url=http://www.epa.gov/ozone/snap/aerosol/aerosol.pdf, title=Significant New Alternatives Policy (SNAP) - US EPA , website=Environmental Protection Agency , access-date=May 9, 2018, url-status=live, archive-url=https://web.archive.org/web/20150616125854/http://www.epa.gov/Ozone/snap/aerosol/aerosol.pdf, archive-date=June 16, 2015 {{cite web, url=http://www.epa.gov/spdpublc/fedregstr/58fr50464.html, title=58 FR 50464 | Ozone Layer Protection – Regulatory Programs | US EPA, website=epa.gov, access-date=May 9, 2018, url-status=live, archive-url=https://web.archive.org/web/20120107152010/http://www.epa.gov/spdpublc/fedregstr/58fr50464.html, archive-date=January 7, 2012 {{cite web , url=https://www.400fps.com/airsoft_blog/gas/ , title=GAS!! | Airsoft Blog , access-date=2012-12-20 , url-status=dead , archive-url=https://archive.today/20130116034504/https://www.400fps.com/airsoft_blog/gas/ , archive-date=2013-01-16 Gas descriptions Airsoft Japanese inventions Pneumatic weapons Airsoft guns Toy weapons