Aggressive two outer barrel w/ separate hop-up units (yes, two!) Programmable Electronic Control System (ECS) - 3 / 5-round Burst, Motor Protection, & Low Battery Detection Deans to Tamiya adapter to make it compatible with most batteries M-LOK Rail System allows you to mount foregrips, flashlight and other accessories Single custom gearbox with split cylinder and single trigger simultaneously shoots BBs out of both barrels Single magazine release for quick and efficient reloads paired with ambidextrous selector switch Functional bolt catch and release that makes it easier to adjust both hop-up units Ambidextrous rear sling mount perfect for both left- and right-handed combatants Flip-up front and rear sight allows you to use in conjunction with scopes Full metal upper and lower receivers, outer barrels, M-LOK system and buffer tube MOSFET protected trigger contacts for increased durability and performance In the Box 1X Rifle 2X Magazines Specifications: Brand Classic Army Operation Electric Automatic Build Metal Lower & Upper Receiver, Rail System, Outer Barrels, Buffer Tube, Sights / Polymer Stock, Motor Grip Firing Modes Semi-Automatic, Full-Automatic, 3/5rd Burst (Using ECS), Safety Muzzle Velocity 330 - 350 FPS (w/ 0.20g BBs) Gearbox Custom Gearbox w/ Split Cylinder Battery 11.1 Stick LiPo Magazine Capacity 300 Rounds Hop-Up Yes, Adjustable (Two Units) Length 28.3 - 31.5 (Retracted / Extended) Weight 7.5 lbs Color Black California Proposition 65 Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov