Full-Auto fun is always Number One! Power up the Umarex StrikeForce .177 caliber BB rifle with a pair of 12 gram CO2 cartridges fill the magazine with BBs and start blasting targets. - The Umarex StrikeForce is modeled after an SBR-style modern sporting rifle with its L-shaped adjustable lightweight tactical stock and 10 inch profile barrel and its M-LOK slot equipped hand guard. Use the included removable flip-up iron sights to line up your target or attach your favorite red dot reflex or scope to the full-length Picatinny rail on top of this modern day BB gun. - The magazine holds (30) .177 caliber steel BBs and two 12 gram CO2 cartridges that are housed in the buffer tube of the stock. The StrikeForce sends the BBs down range at 450 FPS in either standard semi-automatic mode or in fully-automatic fun-switch mode. These modes and the on safe settings are selected via the three position thumb-operated switch located above the grip on the left side of the StrikeForce. - In the box is the full-auto BB gun with one magazine a BB speedloader and interchangeable grips in three sizes. - .177 Caliber BB Carbine - Powered by (2) 12g CO2 - Adjustable Buttstock - Flip-Up Front and Read Sights - 30 Shot Drop Free Magazine - 450 FPS - Semi or Full Auto Firing Modes - Full Length Top Picatinny Rail