Umarex Air Gun Steel Force .177 BB Following On The heels Of The incredibly Popular Umarex Steel Storm, The New Steel Force Is a 6-Shot Burst Full-Auto M4-Style BB Machine On a Fun Platform. This Addition To The Umarex Tactical Line-Up Is geared For Recreational Shooters With Its 300 Round BB Reservoir, Side-By-Side 12G Co2 Valve System that's housed In The Guns Magazine, And Its Single Or 6-Shot Selector. The Steel Force's Collapsible Stock turns This Fun Gun For adults Into a Learning System For Youth. Specifications: - Product Group: Air Rifles - Brand: Umarex - Velocity (Fps): 430 - Caliber: .177 (4.5mm) - Ammo Type: Steel Bbs - Fps: 430 - Barrel Length: 7.5 - Total Length (inches): 24.4 - 28.2 - Capacity: 300 - Action: Semi Auto - Power: Co2 Manufacturer: Umarex Model: 2254855 SKU: MS_U2254855