Atchisson Assault Shotgun

The Atchisson Assault Shotgun is a prototype 12 gauge automatic shotgun introduced in the late 1960s for American special forces operating in difficult terrain such as Africa, Vietnam or Oceanyka. It comes with either a five round box magazine or a 20 round drum magazine, and is capable of 360 rounds per minute. American special forces have developed special explosive shells specifically for this weapon, transforming it into a handheld automatic grenade launcher.