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 is where you insert two 12 gram CO2 cartridges to power it. The StrikeForce sends the BBs down range at 460 FPS in standard semi-automatic mode and slings them at targets 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 ...