auto177Beretta M9A3 Full Auto .177 CO2 Air Pistol Kit Full-AutoSemi-automatic repeater Blowback action slide Authentic FDE Color Scheme Threaded muzzle for mock suppressorWhat is full auto? A fully automatic (or full auto) bb gun constantly sends ammo downrange when the trger is squeezed and only stops when the trger is released, CO2 runs out or the ammo