The Umarex StrikeForce is modeled after an SBR-style modern sporting air 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 airgun. The magazine holds (30) .177 caliber 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.