Programmable Electronic Control System (ECS) - 3/5-round Burst, Motor Protection, & Low Battery Detection 31k High Speed / High Torque Motor Free-float rail system has plenty of space for attaching accessories Retractable crane stock can allows you to store nunchuck batteries Textured motor/pistol grip for that's comfortable to handle 6.03mm inner barrel for improved precision and range Low-resistance wiring w/ small Tamiya connector reduces heat build-up Flip-up front and rear sights can be co-witnessed with dot scopes Quick-change spring system lets you adjust muzzle velocity easily In the Box 1X Rifle 1X Magazine Specifications: Brand Classic Army Operation Electric Automatic Build Metal Outer Barrel / Polymer Stock, Motor Grip Firing Modes Full-Automatic, Semi-Automatic, Programmable Burst, Safety Muzzle Velocity 390 - 400 FPS (w/ 0.20g BBs) Gearbox Full Metal Version 2 (w/ 9mm Bushings) Connector Small Tamiya Battery 7.4V Buffer Tube LiPo (not included) Magazine Capacity 300 Rounds (High Capacity) Hop-Up Adjustable Inner Barrel Diameter 6.03 mm Inner Barrel Length 300 mm Weight 7 lbs Color Black California Proposition 65 Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov