Specifications and Features: - Product Group: Air Rifles - Brand: Umarex - Velocity (FPS): 430 - Caliber: 0.177 (4.5mm) - Ammo Type: Steel BBs - FPS w/Lead Pellet: 430 - Barrel Length: 7.5 - Total Length (inches): 15 - Capacity: 300 - Optic Compatible: Tactical Rail - Action: Semi & Full Auto - Safety Type: Automatic - Power: CO2 - The Umarex Steel Storm Tactical BB gun has a 30 shot capacity with a 300-round reserve! It allows you to shoot 6-shot bursts in full-auto mode and single shots in semi-auto mode. The gun gives the feel of a real gun in your hands with its ultra-accurate look and feel. The gun is powered by dual 12 g CO2 capsules and the CO2 is housed in a drop out magazine for ease of access.