High Capacity 300 round magazine Durable rigid magazine design assists in faster reloads M-LOK rail provides a lightweight build CNC machined anodized aluminum rail Quick change spring design easily alters FPS Built-in MOSFET protects trigger contacts and increases response Ambidextrous rear sling point adapts to the user Rotary hop-up adjusts BB spin for optimal precision Ergonomically designed polymer textured grip Functioning bolt catch and dust cover Flip-up front and rear sights enhance target acquisition Multi-position AR stock adjusts for immediate firing preference 20mm top optic rail mounts scopes, sights, and magnifiers Electric blowback system provides a more authentic feeling of a real firearmSpecifications: Operation Electric Blowback (EBB) Build Metal / Polymer Firing Modes Semi, Full-Automatic w / Functional Safety Muzzle Velocity 395 FPS (w/.20g BBs) Magazine Capacity 300 Rounds Gearbox Version 2 Gearbox Battery 11.1V Li-Po Mini (Not Included) Hop-Up Yes / Adjustable Weight 6.18 lbs Overall Length 31.75 - 28.75 Inches (Extended / Retracted) Barrel Length 263mm Color BLACK 1X AEG Rifle