Operation Automatic Electric (AEG) Build Nylon Polymer Firing Modes Semi-automatic, Full-automatic, w/ Functional Safety Muzzle Velocity 400-420 FPS (w/ 0.20g BBs) Gearbox Version 2 (Metal) Magazine 360 Rounds (Hi-Cap) Battery 9.6V NiMH (Not Included) Inner Barrel 285mm Hop-Up Yes, Adjustable Weight 5.85 lbs Overall Length 27.5 - 30.7 (Retracted/Extended)