The Umarex Beretta PX4 Storm semi-auto air pistol from Umarex is fully licenced by Beretta. Featuring a double-action magazine with the ability to shoot both 4.5mm steel BBs and .177 air pellets. The included magazine is also double-ended, therefore has an 8 round rotary clip on each end. The pistol is powered by a 12g CO2 cartridges housed in the grip. The PX4’s strong blowback system provides great realistic experience and fires up to 380fps.