well d3809 m16 cqb stubby electric airsoft gun full auto fps-300 high capacity 500 round mag, cqb stubby version(Airsoft Gun) Features: Modeled After the Iconic US Army M16 Assault Rifle! Electric Powered (AEG) CQB Stubby Version! (Close Quarters) Velocity (FPS): 300 with 0.12g BB's Adjustable Hop Up System Can Switch Between Full and Semi Automatic with the Flick of a Switch! Plastic Receiver Retractable Stock High Capacity 500 Round Magazine Requires Ni-Mh 450mAh 8.4V Battery to run (Included) Length: 25"