Umarex HK Heckler & Koch MP7 .177 Caliber Pellet Gun

auto177Umarex StrikeForce Full Auto .177 Caliber BB Gun Air Rifle. 3.7 out of 5 stars 22. 5 offers fromAbout this item . 18-shot, .177 caliber BB air pistol with realistic blowback action ; Powered by a 12-gram CO2 cartridge (CO2 NOT included. To ensure a proper seal and for best performance, Umarex-brand CO2 is