Arcturus AK-12K Steel Bodied Modernized Airsoft AEG Rifle (Color: Black)Specifications: Brand: Arcturus Operation: Electric Automatic Construction: Stamped Steel, Polymer Firing Modes: Semi Automatic, Full Automatic, Safe Muzzle Velocity: 420 425 FPS with 0. 20g BBs Magazine Capacity: 500 Rounds Gearbox: Full Metal Version 3 Hop Up: Yes, Adjustable Motor: Short Type Battery: 9. 6v Stick NiMH Recommended (Battery and charger not included) Battery Connector: Small Tamiya Rifle Length: 33 37 inches (Stock Retracted Extended)