Equipped with a high capacity 300 round magazine KeyMod ported rail with an elevated top rail design CNC machined anodized aluminum rail YAK designed lightweight skeletonized handguard Enlarged magazine release button presents a modern look Electric Blow Back system provides a more authentic feeling of a real firearm Functioning bolt catch and dust cover Stipling pistol grip enhances comfort and ergonomics Flip-up front and rear sights enhance target acquisition Retractable MTR stock adjusts for immediate firing preference Full length 20mm top rail for mounting optics, sights, and magnifiersSpecifications: Operation Electric Blowback (EBB) Build Metal Frame / 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 7.4V' or 11.1V Li-Po Mini' (Not Included) Hop-Up Yes / Adjustable Weight 6.93 lbs Overall Length 32.75 - 35.75 Inches (Retracted / Extended) Barrel Length 375mm Motor Long Spring M120 Color BLACK 1X AEG Rifle