Manufacturer: Army Armament SKU: ARMY-R616-2 Features: Upgraded steel Hammer, Sear, Disconnector, Valve knocker, Fire pin lock Specification: Main Material : Aluminum, Metal Alloy, Polymer Magazine Capacity : 30 Rounds 6mm BB Overall Length : 230mm Inner Barrel Length : 85mm Weight : 970g System : Gas Blowback, Adjustable Hop-Up Power Source : Top / Green Gas Fire Mode : Semi-Auto / Safety Muzzle Velocity : Approx. 300-320 Fps with 0.2G BB