Electric blowback functionality with every trigger pull. - One-piece full metal alloy upper and lower receivers. - Full metal Version 3 Gearbox built with 9mm bearings. - Full metal outer barrel buffer tube for durability. - Electric 30/120rd magazine cut-off prevents AEG to automatically stop firing. - Switch life extender prevents contact burnout. - Rate of fire projects to 17 + RPS. - Upgraded high torque motor and high speed gear set. - Measured inner barrel size of 420mm in length. - Quick change spring system. - Rotary hop up unit. Color: BLACKSpecifications: Operation Electric RecoilBuild Metal Receivers, Barrel/ Polymer Handguard, Grip, StockFiring Modes Semi-automatic, Full-automatic, w/ Functional SafetyMuzzle Velocity 410 - 440 FPS (w/ 0.20g BBs)Gearbox Full Metal KWA 3GX proprietaryMagazine 30/120rd (w/ cut off) Battery 7.4V LiPo Brick (Not Included)Hop-Up Adjustable (Rotary)Weight 9 lbsInner Barrel Length 420mmInner Barrel Diameter 6.05mmOverall Length 27.5 in. / 37.25 in. (Retracted / Extended)Color BLACK 1X AEG Rifle