Crosman 1077 Tactical, CO2 Semi Automatic Rifle, .177 Pellet, 780 Feet Per Second, 20.4 Barrel, Black, 12 Rounds 1077TAC With CO2 power and a 12-shot rotary clip you can put the maximum amount of lead down range in the least amount of time, with velocities up to 780 fps. Challenge your friends, challenge yourself. The rifled steel barrel, windage adjustable rear sight and fiber optic front sight combine to help improve your accuracy.