Product Description
12.7 MK-18 Upper A4 1/7 CL
We started with our 5.56 12.7" 1/7 twist barrel for this build. The barrel is made from 4150 machine gun steel with phosphate finish. The bore is chrome lined. The upper receiver is T marked and is type 3 hard coat black. This does have M4 ramps. The Flash hider is a A2 this is for PISTOL OR SBR USE ONLY. Our barrels are Mil-Spec or better. We recommend a 55gr or 62gr bullet for best accuracy. The front sight is a A2 F-Marked with bayonet lug and attached with taper pins.
Specs:
Upper: TNTE A3 Upper 7075-T6 with M4 ramps
Barrel: 5.56 12.7, 1/7, 4150 CMV, CL, 1/2-28 thread
Gas System: Carbine
Gas Block: F-Marked A2
Handguard: Double Wall Two Piece Drop In
Flash Hider: A2
BCG: Optional
Charging Handle: Optional
