GAU Avenger
A General Electric GAU-8/A Avenger 30mm rotary cannon being test fired. Used in in the A-10 Thunder bolt II, it fires 4200 (70 rounds per second) rounds per minute of amour piercing rounds mixed with high explosive shells. It was designed to fire its full ammunition load in 10 two-second bursts, with a 1 minute cool down period between bursts.