Specifications:
Barrel MFG: ELD PerformanceBarrel: 16.25" 5.56 Mid Gas, Medium Profile, 1:7T, Nitride, 4140/4150 SteelTwist Rate: 1-7TThread Pitch: 1/2X28Gas System Length: Mid-LengthUpper: AR-15 Stripped Upper ReceiverGas Block: .750 Low Profile Steel Gas BlockGas Tube: Stainless Steel Carbine Length Gas TubeMuzzle Device: Strike Industries Miller Comp Muzzle DeviceEjection Port Door: Omega Mfg. AR-15 Ejection Port Door, Rod And SpringUpper Weight: 3lbs 15oz