The original design later led to development several comparable firearms of such utility, including the USAS-12 combat shotgun.

The shotgun utilizes fully automatic blowback action as its primary and only mode of fire.

In 1987, Max Atchisson sold the rights of the AA-12 to Jerry Baber of Military Police Systems, Inc., Piney Flats, Tennessee.

Due to the abundant use of stainless steel and the designed clearance for fouling, MPS has stated that the weapon requires little to no cleaning or lubrication.

By 2004, ten firing models of the AA-12 had been produced[13] and were demonstrated to the United States Marine Corps, who did not adopt the weapon.