A full metal upper and lower receiver with a matte finish provides a realistic feel that withstands rigorous gameplay Reinforced polymer textured pistol grip and adjustable stock reduces fatigue and provides optimal comfort while shouldered Equipped with the Avalon rear wired version 2 ECS gearbox with a quick change spring and functional bolt catch Integrated flip up front sight is flush to the handguard and doesn't impede additional optics Forty segment 20mm picatinny handguard attaches tactical lasers, flashlights and grips Designed with licensed Heckler & Koch Markings on the receivers and bolt of the rifle Oversized bolt and magazine magazine release is both responsive and conveniently placed An adaptable CNC magazine catch uniquely adjusts for compatibility with a very wide range of M4 magazines Includes a bladed fuse and dual MOSFETs to ensure responsive and long lasting internals In the Box 1X AEG Rifle Specifications: Brand Elite ForceOperation Electric AutomaticBuild Full Metal Handguard, Receiver, Buffer Tube / Polymer Grip, StockFiring Modes Semi, Full Automatic w/ Functional SafetyMuzzle Velocity 370 - 390 FPS (w/0 .20g BBs)Gearbox Version 2 (Metal)Battery 7.4 LiPo (Nunchuck)Magazine Capacity 300 RoundsHop-Up Yes, AdjustableLength 27.5 - 30.5 InchesColor BLACK California Proposition 65 Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov