Aluminum alloy upper and lower receivers Fully licensed Defiance TR113 KeyMod handguard Fully licensed Defiance motor grip Full metal Version 2 gearbox w/ 8mm ball bearing bushings Ambidextrous fire selector switch and sling loops Functional locking bolt and bolt release Licensed CMC Trigger Adjustable front and rear iron sights 6-position Krytac stock Internals: 8mm Ball Bearing Nautilus Mechbox Integrated FET System Easy Spring Access Padded Cylinder Head Relief-cut Cylinder Window Anti-corrosion Mechbox Coating Adjustable Rotary Hop-Up Temperature And Wear Resistant Hop-Up Bucking KRYTAC 30k Neodymium Magniet High-Torque MotorSpecifications: Operation Electric AutomaticBuild Metal Upper/Lower Receivers, Rail System, Outer Barrel, Buffer Tube / Polymer Stock, Motor GripFiring Modes Semi-automatic, Full-automatic, w/ Functional SafetyMuzzle Velocity 400FPS (w/0.2g BBs)Gearbox Full Metal Version 2 w/ 8mm bearingsMagazine 300rd High CapacityBattery 9.6V Nunchuck (not included)Inner Barrel 416mm (6.05mm diameter)Hop-Up AdjustableOverall Length 34 / 37.25 (Adjustable) 1X Rifle