The GAU-19 is a three-barreled gatling gun ideally suited for scout or utility helicopters and light fixed-wing aircraft. Its high rate of fire, combined with the 12.7mm ammunition's short time of flight, permits reduced exposure time while the gunner is unmasked.
The externally mounted version of the 12.7mm GAU-19/A three-barrel Gatling gun provides high-rate-of-fire firepower in a small, lightweight weapon system. It is highly effective in both air-to-air and air-to-ground missions. It is able to provide highly effective air-to-ground firepower against area suppression and point targets, such as light armored vehicles.