- Full metal upper/lower receivers - Full metal reinforced Version 2 gearbox - CYMA M4 internals and externals - Full metal one-piece hop-up system - Full metal 11-inch outer barrel - Functional charging handle/bolt release - Flat top receiver optics rail - Adjustable flip-up front and rear sights - Removable metal carry handle - Retractable LE stock - Front and rear sling mounts - Battery and charger includedSpecifications: Operation Electric AutomaticBuild Metal Receiver, Outer Barrel, Buffer Tube, Sights / Polymer Handguard, Stock, Motor GripFiring Modes Semi-automatic, Full-automatic, w/ Functional SafetyMuzzle Velocity 380 'oe 420 FPS (w/ 0.20g BBs)Gearbox Full Metal Version 2 (Reinforced)Magazine 300rd High Capacity (gear wind-up)Battery 8.4V Mini (included)Inner Barrel Length 290 mmInner Barrel Diameter 6.05 mmHop-Up Adjustable One-PieceWeight 6.5 lbsOverall Length 26.5 in. / 29.75 in. (Retracted / Extended)Color BLACK Airsoft rifle