Multiple barrel firearms

The TKB-506 (Russian: ТКБ-506) was a small handgun designed to look like a cigar tin or lighter, developed by Igor Stechkin, allegedly on the orders of the KGB.

A double-barreled shotgun is a shotgun with two parallel barrels, allowing two shots to be fired.

The GAU-19/A (GECAL 50), is an electrically driven Gatling gun that fires the .

The General Electric GAU-8/A Avenger is a 30 mm hydraulically driven seven-barrel Gatling-type autocannon that is typically mounted in the United States Air Force's Fairchild Republic A-10 Thunderbolt II.

The Gryazev-Shipunov GSh-6-30 (Russian: Грязев-Шипунов ГШ-6-30) is a Russian 30 mm Gatling-style aircraft-mounted and naval autocannon used by Soviet and later CIS military aircraft.

TKB-059 (ТКБ-059) was a Soviet three-barrel bullpup assault rifle, capable of fully automatic fire, chambered for the 7.

The XM214 was a prototype 5.

The Yakushev-Borzov YakB-12.

The Gryazev-Shipunov GSh-23 (Russian: ГШ-23) is a twin-barreled 23 mm autocannon developed in the Soviet Union, primarily for military aircraft use.

The Gryazev-Shipunov GSh-30-2 (ГШ-30-2) or GSh-2-30 is a dual-barrel autocannon developed for use on certain Soviet military aircraft.

The SPP-1 Underwater Pistol was made in the Soviet Union for use underwater by Soviet frogmen as an underwater firearm.

The M30 Luftwaffe drilling ("triple") was a survival weapon issued to Luftwaffe pilots during World War II.

The Gatling gun is one of the best-known early rapid-fire spring loaded, hand cranked weapons and a forerunner of the modern machine gun.

The M61 Vulcan is a hydraulically or pneumatically driven, six-barrel, air-cooled, electrically fired Gatling-style rotary cannon which fires 20 mm rounds at an extremely high rate (typically 6,000 rounds per minute).

The Arsenal Firearms AF2011-A1 is a double barreled, semi-automatic pistol of Italian origin.

The TP-82 pistol (Russian: ТП-82) was a triple-barreled Soviet firearm that was carried by cosmonauts on space missions.

The Villar Perosa M15 was an Italian portable automatic firearm developed during the World War I by the Officine di Villar Perosa.

The Advanced Infantry Combat Weapon (AICW) was a prototype assault rifle developed in Australia.

The Fokker-Leimberger was an externally powered, 12-barrel rifle-caliber rotary cannon developed in Germany during the First World War.

The S4M (Russian: С4М) was a Soviet insurgency weapon pistol, designed to be used expressly for the purpose of assassination.

The AK-630 is a Soviet and Russian fully automatic naval close-in weapon system based on a six-barreled 30 mm rotary cannon.

The Phalanx CIWS is a close-in weapon system for defense against anti-ship missiles.

The HK P11 is a Heckler & Koch pistol designed as an underwater firearm that was developed in 1976.

The DP-64 Nepryadva is a Russian special-purpose double-barreled over/under grenade launcher designed to protect ships, dockyards, water development works, and other coastal installations from combat swimmers and naval special forces.

The Gryazev-Shipunov GSh-6-23 (Russian: Грязев-Шипунов ГШ-6-23) (GRAU designation: 9A-620 for GSh-6-23, 9A-768 for GSh-6-23M modernized variant) is a six-barreled 23 mm rotary cannon used by some modern Soviet/Russian military aircraft.

The term derringer [derr-in-gur] is a genericized misspelling of the last name of Henry Deringer, a famous 19th-century maker of small pocket pistols.

The MSP Groza ("thunderstorm") silent pistol is a double-barrel, derringer-type firearm designed in the Soviet Union in 1972.

The 80.002 was a combined assault rifle and grenade launcher prototype based on the AK-74 platform.

OSA (Russian: ОСА, "wasp") is a family of Russian non-lethal pistols that can be also used as flare gun, flashbang gun or starting pistol.

The LeMat revolver was a .

The garrucha is a small pistol, similar to a derringer, common in southern Brazil and Argentina in the early 20th Century.

The COP .357 is a 4-shot Derringer-type pistol chambered for .

The Winchester Liberator was a prototype 16-gauge, four-barrelled shotgun, similar to a scaled-up four-shot double action derringer.

The Nock gun was a seven-barrelled flintlock smoothbore firearm used by the Royal Navy during the early stages of the Napoleonic Wars.

The Special Purpose Individual Weapon (SPIW) was a long-running United States Army program to develop, in part, a workable flechette-firing "rifle", though other concepts were also involved.

The Henrion, Dassy & Heuschen double-barrel revolver was a type of revolver with two stacked barrels and two concentric sets of chambers, each serving its own barrel.

The DoubleTap is a double-barreled derringer pistol designed for personal protection and manufactured by DoubleTap Defense, LLC.

The XM301 Cannon is an externally powered, three-barrel 20 mm Gatling gun made by General Dynamics for the U.

Flash-Ball is a registered trademark for a nominally non-lethal hand-held weapon used mainly by law enforcement officers in riot situations as an alternative to lethal firearms, baton rounds, and plastic bullets.

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 .

The Mossberg Brownie is a four-barreled, .

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.

The Type 100 is a double barrel machine gun of Japanese origin.

The Nambu Type 90 was a flare gun of Japanese origin and manufactured by Nambu.