GAU-12 Equalizer
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The General Dynamics GAU-12/U Equalizer is a five-barrel 25 mm Gatling-type rotary cannon. The GAU-12/U is used by the United States, Italy, and Spain, which mount the weapon in their attack jets such
An AV-8 Harrier II; the two pods on the belly of the aircraft hold the cannon (port side, visible hole) and ammunition (starboard side).
GAU-8 Avenger
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The General Electric GAU-8/A Avenger is a 30 mm hydraulically driven seven-barrel Gatling-style autocannon that is primarily and most famously mounted in the United States Air Force's Fairchild Republ
GAU-12 Equalizer
…is mounted on F-35 Lightning II fighter jets. The five-barrel Equalizer cannon was developed in the late 1970s, based on the mechanism of the 30mm GAU-8/A Avenger cannon, but firing a new NATO series of 25 mm ammunition. The GAU-12/U cannon is operated by an 11 kW (15 hp) electric motor, or in external mounts…
The GAU-8/A Avenger's barrel and breech assembly
GAU-8 closeup
30×173 mm round next to a .30-06 Springfield for comparison
GAU-8 mounted in A-10