Length: 715mm-810mm, Adjustable Weight: 2000g Inner Barrel: 275mm Magazine Capacity: 120rd Polymer Mid-Capacity. Works with Matrix, G&G, Tokyo Marui and other compatible M4 / M16 Series Airsoft AEG Magazines Muzzle Velocity: 366~400 FPS (Measured with 0.20g BBs) Thread Direction: 14mm Negative Gearbox: Ver 2 Full Metal, Fully Upgradeable Motor: Long Type Fire Modes: Semi/Full-Auto, Safety Battery: 9.6v Small Butterfly Type recommended (Battery not included) Hopup: Yes, Adjustable Package Includes: Gun, Magazine, Manual