What caliber is the GAU-2?

What caliber is the GAU-2?

• A. 5.56
• B. 7.62
• C. 12.7
• D. 9.0

Answer: (B)

GAU-2 uses 7.62 mm NATO ammunition. This rotary minigun fires the 7.62×51mm round, a rifle-caliber cartridge chosen to balance useful muzzle energy, weight, and ammunition feed on aircraft mounts. The 7.62 mm round provides enough hit power for light-aircraft targets while keeping the gun compact and reliable for rapid-fire operation. The other calibers listed correspond to different weapons (smaller rifle rounds or a heavy .50 caliber) and are not the caliber used by the GAU-2.

GAU-2 uses 7.62 mm NATO ammunition. This rotary minigun fires the 7.62×51mm round, a rifle-caliber cartridge chosen to balance useful muzzle energy, weight, and ammunition feed on aircraft mounts. The 7.62 mm round provides enough hit power for light-aircraft targets while keeping the gun compact and reliable for rapid-fire operation. The other calibers listed correspond to different weapons (smaller rifle rounds or a heavy .50 caliber) and are not the caliber used by the GAU-2.