List of multiple barrel firearms

This page is a list of multiple barrel firearms of all forms from around the world.^[1]

Pistols

Name/ designation	Year of intro	Country of origin	Primary cartridge	Major users
COP 357 Derringer		United States	.357 Magnum
The COP 357 was a 4 shot Derringer type pistol chambered for the powerful .357 magnum round. It was designed by Robert Hillberg, based on earlier work on the Hillberg Insurgency Weapon. It was manufactured by the now defunct COP Inc. of Torrance, California (COP stood for Compact Off-Duty Police). The double action weapon is only slightly larger than the typical .25 automatic pistol pistol, which made it a good choice for a defensive weapon or a police backup gun.
Garrucha		Brazil	n/a
The Garrucha is a small pistol, similar to a Derringer, common in southern Brazil and Argentina in the early 20th Century. It is usually double-barreled, though with the barrels side-by-side rather than vertical as is common in American derringers, and the bores can be rifled or smooth. In Brazil, the most popular chamberings were for the .320 and .380 centrefire cartridges, similar to the .32 S&W and .38 S&W in appearance, but conical. They were also chambered for the .22 Short, .22 Long, .22 Long Rifle, and the .32, 8mm, and 9mm Flobert cartridges, among others.
Howdah pistol	19th Century	United Kingdom	n/a	British Empire
The Howdah pistol was a large-calibre handgun, often with two or four barrels, used in India and Africa in the mid-to-late-nineteenth and early-twentieth centuries, during the period of British Colonial rule. It was typically intended for defence against tigers, lions, and other dangerous animals that might be encountered in remote areas. Multi-barreled designs were initially favoured for Howdah pistols because they offered faster reloading than was possible with contemporary revolvers, which had to be loaded and unloaded through a gate in the side of the frame.
Lancaster Pistol	1884	United Kingdom	.455 Webley	British Empire
The Lancaster Pistol was a multi-barrelled (either 2 or 4 barrels) handgun produced in England in the mid-late 19th century, chambered in a variety of centrefire pistol calibres—chiefly .380", .450 Adams, .455 Webley, and .577 calibre. It was a modernised version of the pepper-box pistol popular in the early-mid 19th century. Unlike these earlier guns, which had percussion cap ignition the Lancaster was chambered for the more modern brass cartridges. It had a faster rate of fire than the standard-issue Adams revolver and was often fitted with a Tranter-type trigger to overcome the heavy pull of the revolving striker.
Mossberg Brownie	1920-1932	United States	.22LR	n/a
The Mossberg Brownie was a four-barreled, .22 Long Rifle pistol, similar to a derringer or pepperbox, produced by O.F. Mossberg & Sons from 1920-1932. The Brownie was based on an earlier pistol patented and licensed to the Shattuck Company by Oscar Mossberg.
Baylè 1879 wallet / palm pistol	1879	France	12 gauge	n/a
The Baylè Pistol was a 6 barrel pistol of French origin introduced in 1879. The barrels were placed vertical and firing was actuated with a double-action trigger mechanism firing each round at a time.

Revolvers

Name/ designation	Year of intro	Country of origin	Primary cartridge	Major users
Bajōzutsu revolver		Japan	n/a
The bajōzutsu (馬上筒) revolver was a Japanese 3 shot pistol of the Edo period and possibly invented at the same time, before the Americans and Europeans were in search of multi shot firearms.
Henrion, Dassy & Heuschen Revolver	1911	Belgium	.32 S&W	n/a
The Henrion, Dassy & Heuschen Revolver (HDH Revolver) was a 20 shot revolver manufactured by the French firm of Henrion, Dassy & Heuschen (HDH) from 1911 to 1928. It was marketed under a variety of names that were supposed to denote power and manly coolness. Names such as "Wild West", "Terrible", "Redoubtable", or even "Machine-gun HDH" certainly have a get-down-to-business ring to them.
LeMat revolver	1861	France  Confederate States	.42 16ga	n/a
The LeMat revolver was a .42 or .36 caliber cap & ball black powder revolver invented by Dr. Jean Alexandre LeMat of New Orleans, which featured a rather unusual secondary 16 gauge smoothbore barrel capable of firing buckshot, and saw service with the armed forces of the Confederate States of America during the American Civil War of 1861–1865.
Pepperbox	19th Century (Noted Examples)	Various	Various	n/a
The pepper-box revolver or simply pepperbox (also "pepper-pot", from its resemblance to the household pepper grinder) is a multiple-barrel repeating firearm that has three or more barrels grouped around a central axis. It mostly appears in the form of a multi-shot handheld firearm. Pepperboxes exist in all ammunition systems: matchlock, wheellock, flintlock, percussion, pinfire, rimfire and centerfire.
Cobray Pocket Pal	19??	United States	.22LR .380 ACP	n/a
The Cobray Pocket Pal was a unique revolver that featured the same break-action, layout, and hammer system of the Mossberg Brownie. Cobray combined this with a unique twin-barrel, dual-caliber system. Two "zig-zag" revolving cylinders were provided, one in .22 LR and the other in .380 ACP. The same hammer fired either the .22 caliber in the bottom barrel or the .380 in the top depending on which cylinder was installed.

Shotguns

Name/ designation	Year of intro	Country of origin	Primary cartridge	Major users
Double-barreled shotgun		Various	12ga
A double-barreled shotgun is a shotgun or Combination gun with two parallel barrels, allowing two shots to be fired in quick succession.
FAMARS Rombo		Italy	28 Gauge .410 bore
The FAMARS Rombo is a model of four-barrelled break-action shotgun made by the FAMARS factory in Italy. The shotgun is produced in 28 gauge and .410 bore, and was primarily designed for small-game hunting. It is notable for having a complex action, which allows all four barrels to be fired consecutively and sequentially using just the one trigger.
Leopard 12		Russia	12 Gauge	n/a
The Leopard 12 is a 4 barrel shotgun
M30 Luftwaffe drilling		Germany	n/a	Luftwaffe
The M30 Luftwaffe drilling was a survival weapon issued to Luftwaffe pilots during World War II. It was intended to be used in the event that a pilot was shot down, for defense and for hunting game to stay alive until rescue. For maximum versatility the M30 featured two 12 gauge shotgun barrels, and a 9.3x74mmR rifle barrel. They were manufactured by the German firm JP Sauer.
TP-82		Soviet Union		n/a
The TP-82 is a triple-barreled Soviet firearm that was carried by cosmonauts on space missions. It is intended as a survival aid to be used after landings and before recovery in the Siberian wilderness. The upper two smoothbore barrels use 12.5x70 mm ammunition, or approximately 40 gauge (see gauge) , and the lower rifled barrel uses 5.45 mm caliber ammunition. The pistol can be used for hunting, to defend against predators and for visible and audible distress signals. The detachable buttstock is also a machete that comes with a canvas sheath.
Colt Defender Mark I	1967	United States	12ga	n/a
Colt Defender Mark I was an 8-barrel shotgun intended for law enforcement or military use, completed in 1967. The shotgun had a semi-automatic like fire without the complexity of being a semi-automatic weapon. Each barrel was chambered for the 20 gauge 3 inch magnum shell. The barrels were joined together around a central axis with a pistol grip double action revolver mechanism and a second forward pistol grip for instinctive shooting. The shotgun was extremely simple to operate and very robust.
Winchester Liberator		United States	12ga	n/a
The Winchester Liberator is a 16-gauge, four-barrelled shotgun, similar to a scaled up four-shot double action derringer. It was an implementation of the Hillberg Insurgency Weapon design. Robert Hillberg, the designer, envisioned a weapon that was cheap to manufacture, easy to use, and provided a significant chance of being effective in the hands of someone who had never handled a firearm before. Pistols and submachine guns were eliminated from consideration due to the training required to use them effectively. The shotgun was chosen because it provided a very high volume of fire with a high hit probability. Both Winchester and Colt built prototypes, although the Colt eight-shot design came late in the war and was adapted for the civilian law enforcement market. No known samples were ever produced for military use.

Non-lethal weapons

Name/ designation	Year of intro	Country of origin	Primary cartridge	Major users
Flash-ball		France	44mm	France
The Flash-Ball is a hand-held weapon which is mainly used by law enforcement officers in riot situations as an alternative to lethal firearms, baton rounds, and plastic bullets. It was developed by French hunting firearms manufacturer Verney-Carron who owns the brand name "Flash-Ball" which should only be used to refer to this specific caliber 44/83 weapon of which two versions are currently available. The super-pro version features vertically stacked barrels and is made from metal alloys, while the compact version is made from lighter composite materials with the twin barrels side by side. Both versions of the weapon can be used to fire a variety of ammunition although a soft 44 mm rubber ball is the most common.
PB-4M		Russia	15.5mm	n/a
The PB-4 "Osa" ("Оса", rus. "Wasp") is a family of Russian non-lethal pistols that can be also used as flare launcher or flashbang gun. The pistol is designed and manufactured by state owned organizations Federal center for research and manufacturing and The Institute for science and research in the applied chemistry. The last one is one of the most important military contractors in Russia, first developer of the gun.

Underwater firearms

Name/ designation	Year of intro	Country of origin	Primary cartridge	Major users
H&K P11		Germany	n/a	Germany
The HK P11 is a Heckler & Koch pistol designed as an underwater firearm. Since ordinary-shaped rounds are inaccurate and have a very short range when used underwater, this pistol fires steel darts about 10 cm long. It has five barrels, each of which is loaded with a cartridge, giving the gun a pepper-box appearance, and it is electrically ignited from a battery pack in the pistol grip. After firing all five cartridges, the barrel unit must be sent back to its manufacturer for reloading. In the past, Heckler & Koch has denied knowledge of its existence.
Mk 1 Underwater Defense Gun		United States	n/a	US
The M1 Underwater Defense Gun, also called the Underwater Defense Gun Mark 1 Mod 0, is an underwater firearm developed by the United States during the Cold War. Like other underwater firearms, it fires a special 4.25 inch metal dart as its projectile.
SPP-1		Soviet Union	n/a	Soviet Union Russia
The 4.5 mm SPP-1 Underwater Pistol was made in the USSR for use underwater by Soviet frogmen as an underwater firearm. It was developed in the late 1960s and accepted for use in 1971. Underwater, ordinary-shaped bullets are inaccurate and very short-range. As a result, this pistol fires a round-based 4.5 mm caliber steel dart about 115 mm long (about 4.5 inches), weighing 12.8 g, which has longer range and more penetrating power than speargun spears. The complete cartridge is 145 mm long (about 5.7 inches) and weighs 17.5 g.

Flare launchers

Name/ designation	Year of intro	Country of origin	Primary cartridge	Major users
Krieghoff Model L		Germany	n/a	Luftwaffe
The Krieghoff Model L was a double-barrel Flare gun of German origin. It was manufactured by Krieghoff Waffenfabrik and used by the Luftwaffe.
Nambu Type 90		Japan		Imperial Japanese Navy
The Nambu Type 90 was a Flare Pistol of Japanese Origin and manufactured by Nambu. It was used by the Imperial Japanese Navy and came with two or three barrels.

Grenade launchers

Name/ designation	Year of intro	Country of origin	Primary cartridge	Major users
Redback		Australia	n/a	n/a
The Redback weapon system is being developed under a teaming agreement with Electro-Optic Systems (EOS), Metal Storm (MS) and Singapore Technologies Kinetics (ST Kinetics). The Redback is a 4-barrel, 16-shot remotely operated weapon system that can automatically track targets and slew at speeds of up to 700 degrees/second (almost 2 complete revolutions per second). The primary role of Redback is as a lightweight vehicle or fixed asset mounted 40 mm weapon system.

Rifles

Name/ designation	Year of intro	Country of origin	Primary cartridge	Major users
Nock gun	1779	United Kingdom	n/a	Royal Navy
The Nock gun was invented by British engineer James Wilson in 1779, and named for Nock, the London-based armaments manufacturer contracted to build the gun. It was intended to be fired from the rigging of Royal Navy warships onto the deck in the event that the ship was boarded by enemy sailors. Theoretically, the simultaneous discharge of seven barrels would have devastating effect on the tightly packed groups of enemy sailors.
Double rifle		Various		Various
A double-barreled rifle or double rifle is a type of sporting rifle with two barrels instead of one, available in either side-by-side or the more accurate over-and-under barrel configurations. Double rifles are one of the family of combination guns. In general, double rifles are much more expensive than the much more common magazine-repeater rifles, and, owing to the large-calibre cartridges commonly used, have to withstand very high levels of recoil. Because of their ability to fire two quick shots, double rifles are often used for the hunting of dangerous game in Africa. While today double rifles are typically associated with African big game hunting, double rifles saw their most extensive use during the colonial period in India.
Springfield Armoury SALVO	1957	United States	5.56x45mm NATO	n/a
The Springfield Armoury SALVO was an entrant of Project SALVO. It was a 3 barrel salvo rifle fed by a feeding rotor.
Steinkamp SW1	2010	Germany	n/a	n/a
The Steinkamp SW1 is an over/under double rifle of German origin. The weapon uses a lever action handguard to cock the weapon and a lower trigger to eject the spent brass.
VFIW	1970-73	France	5.56x45mm NATO	n/a
The Volley Firing Infantry Weapon (VFIW) was a rifle concept with the capability of firing semi/full automatic and adjustable spread. It was magazine fed but used special clips holding 3 rounds each.

Assault rifles

Name/ designation	Year of intro	Country of origin	Primary cartridge	Major users
80.002	1974	Nepal	5.45x39mm M74 12.7mm Grenade	n/a
The 80.002 is a combined Assault Rifle/Grenade Launcher based on the AK platform that predated the similar OICW. In developing this set of designers participated V. Minaev, VI Chelikin, GA Jan. The main difference from the Kalashnikov is the presence of weapons of two adjacent shafts 5.45 mm and 12.7 mm respectively.
AO-63	1986	Soviet Union	5.45x39mm M74	Spetsnaz
The AO-63 was intended as a more accurate alternative to the standard issue AK-74 with capabilities firing from 850 to a theoretical 6,000RPM when the two round burst selected making it effective against body armour. It was used during the Abakan trials with the AN-94 being the winner.
TKB-059	1966	Soviet Union	7.62x39mm	n/a
The TKB-059 assault rifle was a bullpup weapon with rapid burst capabilities. It had a unique recoil operation with the spent brass ejecting downwards behind the magazine area enabling the weapon to be used ambidextrously. The TKB-059 recoil operation was used as the basis of the AN-94.
TVGK		Ukraine	4.92x34mm 20mm	n/a
The TVGK is a combined Assault rifle/ Airburst grenade launcher concept from Ukraine. It is of Bullpup configuration and is developed by KB Shar.
K11	2008	South Korea	5.56x45mm NATO 20mm	South Korea United Arab Emirates
The K11 is an OICW chambered to fire 5.56mm rounds, as well as 20mm air-burst shells from its overbarrel launcher. The weapon was adopted by the Republic of Korea Armed Forces in 2008 and was distributed within the Republic of Korea Army during 2010, making it the world's first army to use an airburst rifle as standard issue in the military.

Battle rifles

Name/ designation	Year of intro	Country of origin	Primary cartridge	Major users
ITM Model 3	1989	United States	7.62x51mm NATO 9x19mm Parabellum	n/a
The ITM Model 3 is a combined battle rifle and submachine gun developed by ITM Tool & Die of Ohio for urban warfare. The top section is an AK derivative rifle with the lower section a 9mm submachine gun. The Model-3 chambers 7.62x39mm in the 16" top barrel and 9mm Parabellum in the 7.8" lower barrel. This too has a single trigger with a selector switch. Like the Model-4 also cycles at 800 rounds/minute. The Model-3 unloaded weighs 4.4kg.
Olin/Winchester FAL	1957	United States	5.56mm T65 Duplex	n/a
The Olin/Winchester FAL is an FN FAL battle rifle chambered in the experimental 5.56mm T65 Duplex Round used in Project SALVO to fire flechette projectiles. It was designed by Stefan K. Janson who previously worked on the abandoned Enfield EM2 which actually lost out to the L1A1 SLR in British Service during the 1950s. An example of this weapon can be seen at the Springfield Armoury Museum.

Submachine Guns

Name/ designation	Year of intro	Country of origin	Primary cartridge	Major users
Gordon Close-Support Weapon System	1972	Australia	12ga 9x19mm Parabellum 5.56x45mm NATO 7.62x51mm NATO	n/a
The Gordon Close-Support Weapon System (Gordon CSWS) was an exotic firearm project of Australian origin. A very unusual weapon system was proposed at one time Australian Duncan Gordon. It was assumed that the basis of this family of automatic weapons constitute a belt fed machine gun, automatic shotgun with box magazine and the double-barreled submachine gun with overhead inserted magazines (A la Villar-Perosa SMG) is very unusual configuration.
ITM Model 4		United States	9x19mm Parabellum	n/a
Villar-Perosa aircraft submachine gun	1914	Italy	9x21mm Largo	Austria Hungary Italy
The Villar-Perosa aircraft submachine gun was an Italian double barreled light machine gun designed by Bethel Abiel Revelli, a Major in the Italian Army in 1914. The weapon fired pistol calibre 9 mm Glisenti ammunition, a reduced-power version of the famous 9 mm Para, at the extremely high rate of fire of 3,000 rounds per minute, or 1,500 rounds per minute per barrel. It was arguably the first submachine gun though it was highly impractical due to its design as a stationary machine gun.

Machine guns

Name/ designation	Year of intro	Country of origin	Primary cartridge	Major users
Bira gun	1896-97	Nepal	.577/.450 Martini-Henry	British Empire
The Bira gun was a .577/450 Martini-Henry calibre machine gun designed and manufactured in Nepal during the latter part of the 19th Century. It was a development of, and based upon, the American Gardner gun. It was double barreled, but fed through an overhead drum magazine similar to the later Lewis gun. The Bira gun was never deployed operationally.
Fokker-Leimberger	1916	Germany	7.92x57mm Mauser	Germany
The Fokker-Leimberger was an early example of an externally powered machine gun of Imperial German origin that predated the M134 Minigun. It had 12 barrels and could fire over 7200RPM it had the spent brass ruptured. The weapon was experimented with during World War I until the armistice.
Gast gun	1916	Germany	7.92x57mm Mauser 13mm	Germany
The Gast Gun was a German twin barreled machine gun developed by Karl Gast of Vorwerk und Companie of Barmen, and used during the First World War. It was notable for its high rate of fire of 1,600 rounds per minute and a unique mechanism that is used today in the Gryazev-Shipunov GSh-23L series of Russian aircraft cannon.
GShG-7.62	1960s	Soviet Union	7.62x54mmR	Russia Warsaw Pact Various
The Shipunov GShG-7.62 is a four-barreled rotary machine gun, similar to firearms such as the M134 "Minigun". It has been used only in gun pods and flexible mounts on Kamov Ka-29 prototypes.
Gardner gun	1874	United States	Various	Various
The Gardner gun was an early type of mechanical machine gun. It had one or two barrels, was fed from a vertical magazine or hopper and was operated by a crank. When the crank was turned, a feed arm positioned a cartridge in the breech, the bolt closed and the weapon fired. Turning the crank further opened the breechblock and extracted the spent round.
Gatling gun	1865	United States	Various	Various
The Gatling gun was a hand-cranked, rotary barrel weapon capable of rapid fire. It formed the basis of many externally operated derivatives used today.
Minigun	1963	United States	7.62x51mm NATO	Various
The Minigun is a 7.62 mm, multi-barrel machine gun with a high rate of fire (2,000 to 6,000 rounds per minute), employing Gatling-style rotating barrels with an external power source. In popular culture, the term "Minigun" has come to refer to any externally-powered Gatling gun of rifle caliber, though the term is sometimes used to refer to guns of similar rates of fire and configuration, regardless of power source and caliber. Specifically, minigun refers to a single weapon, originally produced by General Electric. The "Mini" of the name is in comparison to designs that use a similar firing mechanism but larger shells, such as General Electric's earlier 20 mm M61 Vulcan.
Mitrailleuse	1851	France	n/a	France
Montigny mitrailleuse	1863	Belgium	n/a	Belgium Qing Empire
The Montigny mitrailleuse was an early type of crank-operated machine-gun developed by the Belgian gun works of Joseph Montigny between 1859 and 1870. It was an improved version of the "Mitrailleuse", (English: Grapeshot shooter) invented by Belgian Captain Fafschamps in 1851 which was a fixed 50-barrelled volley gun. It was designed to defend narrow defensive positions such as the moats of fortresses. The Belgian army initially purchased Fafschamps volley guns. Only later did they acquire Montigny mitrailleuses. Joseph Montigny also promoted and sold the weapon for offensive field use by placing the weapon on an artillery carriage.
Nordenfelt gun	1873	Sweden	Various	Various
The Nordenfelt Gun was a multiple barrel machine gun that had a row of up to twelve barrels. It was fired by pulling a lever back and forth. It was produced in a number of different calibres from rifle up to 25 mm (1 inch). Larger calibres were also used, but for these calibres the design simply permitted rapid manual loading rather than true automatic fire.
Silin gun	1937	Nepal	7.62x54mmR	n/a
The Silin Gun was a gast-derived, belt-fed machine gun capable of firing up to 6,000RPM.
Slostin gun	1944-46	Soviet Union	7.62x54mmR	n/a
The Slostin was a self-powered Gatling Gun of Russian origin and was chambered in 7.62x54mmR, mounted on PM M1910 wheeled tripods. It used a gas-operation, with stationary breech and movable barrels. each barrel has its own gas cylinders, with piston connected to the next barrel. Upon firing one barrel, next one was forced forward, and thus caused the whole barrel block to rotate through the roller, attached to the mentioned barrel running through cam track in outer shell. The Slostin gun was tested and worked well but not adopted by the Soviet Government as they found it was overcomplicated and had no advantage over the existing PM 1910's, SG-43 Goryunov and RP-46 machine guns.

References

1. ^ Small Arms Illustrated, 2010

See also

• List of weapons
• List of firearms
• List of assault rifles
• List of machine guns
• List of pistols
• List of revolvers
• List of sniper rifles