The DPMS SBR Full Auto CO2 Air rifle is full of action. This air rifle is able to shoot in semi-automatic mode as well as full-automatic. It also has the capability to mount all your favorite accessories on its quad rail. Features: – Tactical Short Barrel Rifle – Full Auto /Semi Auto BB rifle – Blowback action – Adjustable 6 Position Butt stock – AR compatible Pistol Grip – Quad Rail forearm for accessory mounting – Unique muzzle end cap – 25 round drop magazine – Flip up back up iron sights (BUIS) – Angled Foregrip – Realistic weight and functions Specifications: – Action Type: Full Auto/Semi-Automatic – Caliber: . 177 – Barrel Type: Smooth Bore – Capacity: 25 Rounds – Stock Type: Adjustable – Power Source: CO2 – Ammunition: BB – Material: Polymer – Sights: Front and Rear: Flip Up – Finish: Flat Dark Earth