Brand NEW guaranteed. High quality metal alloy receiver w/ weather resistant matte black finish Fully licensed Spikes Tactical roll marks Precision CNC machined CRR 10" free float M-LOK handguard TM compatible Ver. 2 metal gearbox QBS spring system allows for easy spring changes without needing receiver disassembly Full length Picatinny top rail for optics and accessories Adjustable butt stock Flip up front and rear sights Tactical FPS Range: 330-350 Specifications: Length: 762mm - 838mm Weight: 2480g Inner Barrel: ~300mm Magazine Capacity: 150rd Mid-Cap. Works with Tokyo Marui, Matrix, G&P and other compatible M4 Series Airsoft AEG Magazines Rounds Per Second: 17 RPS, 28 RPS (7.4v, 11.1v respectively) Gearbox: Ver 2 Metal, Upgradeable Motor: Long Type Fire Modes: Semi/Full-Auto, Safety Battery: 7.4v Small LiPo Recommended. Wired to the rear w/ Deans Connector (Battery not included) Hopup: Yes, Adjustable Package Includes: Gun, Magazine