The GAU-2/A is an American 7.62 mm calibre, six-barrel medium machine-gun fitted to aircraft. The GAU-2/A has a fixed rate of fire of 4000 rounds per minute and a muzzle velocity of 838 meters-per-second giving an effective range of 1370 meters. The
GAU-2B/A is a variable rate of fire model, with the rate of fire variable up to 4000 rounds per minute. Research GAU-2
The GAU-2/A is an American 7.62 mm calibre, six-barrel medium machine-gun fitted to aircraft. The GAU-2/A has a fixed rate of fire of 4000 rounds per minute and a muzzle velocity of 838 metres per second giving an effective range of 1370 metres. The GAU-2B/A is a variable rate of fire model, with the rate of fire variable up to 4000 rounds per minute. Research GAU-2
 
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