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

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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).

DAYTON, Ohio -- GAU-8/A Avenger on display in the Cold War Gallery at the National Museum of the U.S. Air Force. (U.S. Air Force photo) On Nov. 16, 1970, the Air Force issued a request for proposal for a 30mm rapid fire cannon to use in the A-X Close Air Support aircraft.

Aug 18, 2004 · The 7.62mm Aircraft Machine Gun, identified in the U.S. military inventory as the "M-134" (Army), "GAU-28/A" (Air Force), and "GAU-17/A" (Navy), is a machinegun as defined by 26 U.S.C. 5845(b). Rev. Ruf. 55-528 modified.

Jun 19, 2021 · The General Electric GAU-8/A Avenger is a massive, seven-barrel, 30x173mm, rotating, Gatling gun, entering service with the U.S. Air Force in 1977.

The AN/GAU-8 Avenger 30mm gun system was specifically built to serve as a Close Air Support "Tank Buster" for the U.S. Air Force.

The GAU-8/A also has an improved and more compact bolt design that reduces the overall length and weight of the gun. The GAU8/A is relatively compact, being only fractionally larger in diameter than the much less powerful M61.

The GAU-8/A 30mm Gatlin gun is installed on the U.S. Air Force’s A-10 Thunderbolt II aircraft and the Navy’s Goalkeeper Close-In Weapon System. The GAU-8/A provides a reliable, high-rate-of-fire, combat-proven weapon for close air support and shipboard defense missions.