Fully licensed Heckler & Koch trademarks Unique serial number printed on lower receiver 1:1 Scale replica Integrated polymer rail system Durable ABS plastic body Fully adjustable crane stock Functional charging handle and selector switch Flip Up front and rear iron sights Adjustable hop up chamber Full metal inner barrel Included High Capacity wind-up magazine ABS/Polymer Composite upper and lower receiver In the Box Rifle rechargeable battery wall charger instruction manual two point sling 220-round hi-cap magazine Specifications: Operation Electric AutomaticFiring Modes Semi-automatic and Full-automatic; functional safety modeMuzzle Velocity 300+ FPS (with 0.20g BBs)Effective Range 75-100 ft.Hop-up AdjustableInner Barrel Length 290mmLength 28 in. (Retracted); 31 in. (Extended)Weight 5 poundsBattery Type 7.2v Nunchuck Battery (Compatible with 8.4v nunchuck battery) California Proposition 65 Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov