Crosman Pro 77 Semi-Auto Blowback Air Pistol (In A Compact Hard-Sided Case) Air pistol offers realistic weight, power, and feel in compact, semiautomatic blowback design Slide re-cocks hammer with each pull of trigger Under-barrel weaver-style rail accepts most tactical accessories 0.177 caliber; firing velocity of up to 350 FPS; 21-ounce weight; 6.75-inch length This item is not for sale in some specific zip codes