auto177The Umarex StrikeForce gives you a full auto CO2 BB rifle desned to remind you of the familiar looks and operation of an SBR firearm. You'll enjoy speeds up to 450 fps for excitingBeretta M9A3 Full Auto .177 CO2 Air Pistol Kit Full-AutoSemi-automatic repeater Blowback action slide Authentic FDE Color Scheme Threaded muzzle for mock suppressor