SteelForce .177 Caliber Steel BB Airgun 300 round reservoir Powered by two 12 gram CO2 capsules Select fire with a 6 shot burst "full auto" mode and a single shot semi-auto Flip up front and rear sights Polymer, collapsible stock M4-style BB machine 6-shot burst and 300-round BB reservoir Powered by a 12-gram CO2 capsule 430-FPS