Features: Cast aluminum alloy (milled appearance) receiver with Sharps Bros. MB47 trademarks SLR Rifleworks licensed Airsoft CNC aluminum M-LOK handguard Stamped steel dust cover Rail space on gas tube and hand guards allow easy modularity and allows the user to make this gun their own unique weapon Reinforced aluminum alloy gearbox with 8mm Bearing installed including Quick-Detach Spring Guard (POM + Steel) Li-poly battery ready Length: 880mm / 960mm (Stock Collapsed, Stock Extended) Weight: 2820g Magazine Capacity: 500rd Hi-Capacity. Works with Matrix, Cyma, Tokyo Marui and other compatible AK Series Airsoft AEG Magazines Muzzle Velocity: 350~380 FPS (Measured with 0.20g BBs) Thread Direction: 14mm Negative Gearbox: Version 3, Fully Upgradeable Motor: Short Type Fire Modes: Semi/Full-Auto, Safety Battery: 9.6v Small Stick Type / 11.1V Stick Type Li-Poly Battery Recommended (Maximum Battery Width 19mm. Wired under dust cover w/ small Tamiya) Hopup: Yes, Adjustable Package Includes: Gun, Magazine