M134 7.62mm Machine Gun (1962-1975). The M134 "minigun" (Air Force GAU-2B/A) is a high rate of fire machine gun that uses the Gatling principle. The firing rate is selectable at 2,000 spm or 4,000 spm. The M134 was used on the M21, M27, XM50, XM93, and Emerson MINI-TAT on the UH-1 "Huey", OH-6A Cayuse, and OH-58A Kiowa. It was also used on the M18, M28 series, and XM64 on the AH-1G, MOD AH-1S, and Production AH-1S "Huey" Cobra, and XM53 on the AH-56A Cheyenne. The M134 is also used on a wide variety of special operations aircraft. The M134 was classified Standard A (over 9,500 units were built).
