The Crosman Full Auto R1 BB air gun maximizes backyard fun! Fueled by two 12-gram CO2 cartridges and a 25 round drop out magazine, you wil have target cans flying in no time. The gun features a genuine feel, familiar controls and an intense 1400 round per minute rate of fire, all at a jaw dropping rate of up to 430 fps. Even better, the gun is fully customizable with a 6 position adjustable stock and a Picatinny rail that provides endless accessorie mounting opportunities. Stay on target with the included rail mounted Red Dot sight and "Take it Outside" with Crosman.