Features Fully licensed H&K trademarks Heavy duty metal receiver and handguard w/ weather resistant powder coat finish Flip up front and rear sights; front sight built into handguard, rear sight removable Ergonomic pistol grip w/ a more vertical grip angle for improved comfort during CQB deployment "Slim Line" H&K licensed telescoping stock w/ slip resistant butt pad VFC Avalon Gearbox featuring improved bearings, quick change spring system, built in MOSFET, and powered by high torque neodymium magnet motors Ambidextrous selector, bolt stop, and magazine release Heavy weight H&K licensed hi-cap magazine included Adjustable Stock 320rd Hi-Capacity mag. 370 FPS Velocity (Measured with 0.20g BBs) Ver 2 Full Metal, Fully Upgradeable, gearboxSemi/Full-Auto, Safety Recommended Battery 11.1v Small Buffer Tube LiPo (Battery not included) Adjustable Hop-Up Heavy-duty metal receiver and handguard w/weather resistant powder coat finish Flip-up front and rear sights; front sight built into handguard, rear sight removable Ergonomic pistol grip HK-Style telescoping stock w/butt pad VFC Avalon Gearbox featuring improved bearings, quick change spring system, built-in MOSFET, and powered by high torque neodymium magnet motors Ambidextrous selector, bolt stop, and magazine release Heavy weight hi-cap magazine included (spare magazine sold separately)