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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.
However, the Microgun's prominent feature of using 5.56 mm ammunition was also its downfall. For aircraft gunners, accuracy suffered at high speeds, and range, compared to the 7.62 mm Minigun, was limited. General Electric tried to refocus its efforts by making the Microgun an infantry weapon, but the Army showed no interest. [4]
It is a semi-armor-piercing high-explosive incendiary (SAPHEI) round, providing improvements in range, accuracy, and power over the preceding M56A3 HEI round. [18] The PGU-28/B is a "low-drag" round designed to reduce in-flight drag and deceleration, and has a slightly increased muzzle velocity of 1,050 metres per second (3,450 ft/s). [ 19 ]
The M134 Minigun is the vehicle-mounted version of the M61 Vulcan six-barrel Gatling-style rotary gun that has been affixed to aircraft since 1946. ... the M14 is a more powerful and accurate ...
Like the original Gatling gun, the entire firing cycle is actuated by cams and powered by the rotation of the barrels. [13] The seven-barrel carriage assembly itself is driven by the aircraft's dual hydraulic system. [14] The GAU-8/A ammunition feed is linkless, reducing weight and avoiding a great deal of potential for jamming.
The GAU-19/A is designed to accept standard NATO .50 caliber M9-linked ammunition. The rate of fire is selectable to be either 1,000 or 2,000 rounds per minute. The Humvee armament kit version fires at 1,300 rounds per minute.
It consists of two JLTVs, one with the turret fitted with a 30 mm cannon, 4-round Stinger pod, and an optical sensor and the other with an RPS-42 360-degree radar, 7.62 mm M134 minigun, and EO/IR sensors; both have the Modi II dismounted electronic countermeasures system and shoulder-fired Stingers. [25]
Another factor influencing rate of fire is the supply of ammunition. At 50 rps (3,000 rpm), a five-second burst from an M134 Minigun would use approximately 6.3 kilograms (14 lb) of 7.62 mm ammunition; this alone would make it an impractical weapon for infantry who have to carry a reasonable supply of ammunition with them. For this and other ...