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The M134 Minigun is an American 7.62×51mm NATO six-barrel rotary machine gun with a high rate of fire (2,000 to 6,000 rounds per minute). [2] It features a Gatling-style rotating barrel assembly with an external power source, normally an electric motor.
Sample 5-shot group measuring about 7 mm (0.28 in) at 91 m (100 yd), which corresponds to an angular size of about 0.08 mrad (0.26 moa). Same rifle and load, 25 shots at 91 m (100 yd). Note that the group size is about double, measuring about 15 mm (0.59 in) at 91 m (100 yd), which corresponds to an angular size of about 0.15 mrad (0.51 moa ).
The 20-gauge shotgun is the next most popular size [citation needed], and is popular for upland game hunting. The next most popular sizes are the .410 bore and the 28 gauge. The least popular sizes are the 10 gauge and the 16 gauge; while far less common than the other four gauges, they are still commercially available. [citation needed] [9]
The size of the grouping is described as the diameter of the smallest circle that can be drawn to contain all the shots, [5] typically only measured from the center points of each impact (known as "center-to-center size"). A "flier" is a shot from the same shooting session that is distinctly farther from the general grouping, considered to be ...
With a fast-firing gun using standard rifle ammunition, the US Army and US Air Force showed interest for use of the XM214 on aircraft, helicopters, and armored vehicles. The smaller and lighter Microgun could replace the Minigun on heavily armed gunship aircraft and attack helicopters, freeing up space for ammo, equipment, and even more guns.
Each system consists of a modified Phalanx 1B CIWS, powered by an attached generator and mounted on a trailer for mobility. Including the same 20 mm M61A1 Gatling gun, the unit is likewise capable of firing 4,500 20 mm rounds per minute.
The M61 Vulcan is a hydraulically, electrically, or pneumatically driven, six-barrel, air-cooled, electrically fired Gatling-style rotary cannon which fires 20 mm × 102 mm (0.787 in × 4.016 in) rounds at an extremely high rate (typically 6,000 rounds per minute).
The XM133 Minigun is a 6-barreled Gatling-type machine-gun. The weapon is a self-powered, gas-operated variant of the M134 Minigun . [ 1 ] It fired over 3000 rpm but was not put into production.