The Px4 Storm air pistol is not only a BB gun but a pellet gun as well. It will shoot either projectile from its revolutionary dual-ended magazine. This 16-shot repeater will have you shooting as fast as you can pull the trigger. There's an 8-shot rotary clip on one end of the stick mag and another one at the other end. Since it shoots BBs or pellets you'll have more flexibility with ammo choice. A 12-gram CO2 is easily loaded into the grip and gives you plenty of shots before you need a refill. There's even an accessory rail under the barrel. Like the handgun it has real blowback action it really kicks giving you a feeling of power that most airguns only hope to achieve! Once you start shooting you won't want to stop so get lots of RWS pellets BBs and Walther CO2.