This new Umarex Colt M45 CQBP Government Model is styled after the M1911 CQB pistol. It has full metal quality, and has a full blow back action. It fires the .177 BBs at up to 320 fps! The detachable magazine holds a 12g CO2 capsule and 19 .177 BBs. You should get around 40 shots from one CO2 capsule.