Description Rotary barrel design of the larger pistol but with a shorter and proportioned slide and grip. External spurred hammer. Frame of the Px4 Storm has an integral Picatinny MIL-STD-1913 rail for rapid attachment of tactical lights and laser aiming devices. Ambidextrous slide stop lever. Will accept the full size magazines.Specifications:Barrel Length: 3.2.Barrel Length Range: 3 to 3.9.Caliber-Gauge: 9MM.Capacity: 15.Finish: Black.Hand Gun Web Model: Model PX4.Specific Caliber: 9mm.Tactical. Firearms, trailers, and some accessories are only available for purchase in stores. Each location follows all BATF and individual state/county/city laws to insure the desired product is legal for sale. Any info provided online is subject to change, please go to your local store for more accurate information.