defense review Maxwell Atchisson’s automatic assault shotgun, dubbed the AA-12, delivers pure destruction to anything in its line of fire. The AA-12 can unload a 20-round drum of 12-gauge shotgun shells in under four seconds at a devastating 360-rounds-per-minute. It’s in a class all its own as it provides troops with an insane rate of fire with relatively low recoil. “The versatility of that gun is frankly amazing,” said John Roos from On-Target Solutions.