30-mm GAU-13/A Gatling gun

The U.S. four-barrel 30-mm GAU-13/A Gatling gun is a derivative of the seven-barrel GAU-8/A. It is usually mounted in the GPU-5/A Pave Claw external pod.

The GAU-13/A operates on the Gatling principle. Four 30-mm barrels are mounted on a geared rotor that is driven by a pneumatic motor. As the motor turns the rotor, the cam follower on the bolt of each rotating barrel follows a fixed cam path in the gun housing, opening and closing the bolt once per revolution. Firing only once...