Specifications Brand: Lancer Tactical Operation: Electric Automatic Construction: Nylon Polymer Receivers, Handguard, Firing Modes: Semi-Automatic, Full-Automatic, Safe Muzzle Velocity: 370 - 380 FPS with 0.20g BBs Gearbox: Full Metal Version 2 Battery Connector: Rear Wired Via Small Tamiya Magazine Capacity: 140 Round (Mid-Cap) Hop-Up: Yes, Adjustable (Rotary Style) Handguard Length: 7 inches Inner Barrel Bore: 6.03mm Rifle Length: 24.5 - 28 inches (Stock Retracted / Extended) Rifle Weight: 4.75 lbs Color: Black & Gold Features Full metal Version 2 gearbox has a quick change system that allows for quick and easy spring changes to easily adjust FPS to meet any field requirements The gearbox uses ultra smooth 8mm ball bearings with an 18:1 steel gear ratio, and a 19k RPM high torque motor that provides reliable and consistent performance M-LOK handguard provides plenty of rail space to mount your favorite picatinny compatible accessories The polished 6.03mm tightbore inner barrel offers improved range and accuracy New Gen 3 style pistol grip allows for better ergonomics Full length 20mm picatinny rail that allows the user to mount optics, lights, lasers, PEQ boxes as well as other 20mm picatinny accessories Flip-up front and rear iron sights with a quick deploy mechanism allows for easier target acquisition Retractable stock with multiple positions that meet comfort for shooters of any size Package Includes: 1x Rifle, 1x Magazine, 1x Flash Hider, 1x Bag of Sample , Red dot & Riser , supressor, vertical rail grip !!