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GAU-8 Avenger
The GAU-8/A Avenger's barrel and breech assembly
(ammunition drum off right edge of photo).
Type Gatling-style autocannon
Place of origin United States
Service history
In service 1977–present
Used by United States Air Force (Avenger)
Various navies (Goalkeeper)
Production history
Manufacturer General Electric
No. built Approx. 715[1]
Variants GAU-12/U Equalizer
GAU-13/A
Specifications
Weight 619.5 lb (281 kg)
Length 19 ft 10.5 in (6.06 m) (total system)
112.28 in (2.85 m) (gun only)
Barrel length 90.5 in (2.30 m)
Width 17.2 in (0.437 m) (barrels only)
Cartridge 30×173 mm
Caliber 30 mm
Barrels 7-barrel (progressive RH parabolic twist, 14 grooves)
Action Electrically controlled, hydraulic-driven
Rate of fire 3,900 rpm (variable)[2][3]
Muzzle velocity 3,324 ft/s (1,010 m/s) (API)
Effective firing range 4,000 feet (1,220 m)
Maximum firing range Over 12,000 feet (3,660 m)
Feed system Linkless feed system
The General Electric GAU-8/A Avenger is a 30 mm hydraulically driven seven-barrel Gatling-style autocannon that is typically mounted in the United States Air Force's Fairchild Republic A-10 Thunderbolt II. Designed specifically for the anti-tank role, the Avenger delivers very powerful rounds at a high rate of fire. The GAU-8/A is also used in the Goalkeeper CIWS ship weapon system, which provides defense against short-range threats such as highly maneuverable missiles, aircraft, and fast maneuvering surface vessels.