AR-15 18\" Heavy Barrel, 6.5 Grendel Type 2, 1:8, Stainless

Premium Grade AR-15 Barrel 18\" Heavy Barrel, W/ 1:8 Twist, 6.5 Grendel, Mid length, Stainless Mid length gas system, with .07 gas port, .750 gas block diameter, and threaded for comp. Barrel extension installed with M4 feed ramps. 100% American made. Barrels are manufactured from two types of steel. 4150 Gun Quality Steel, Heat Treated to RC 28-32 Hardness, and Stress Relieved. 416 Stainless Steel, Heat Treated to RC 28-32 Hardness, and Stress Relieved. They are Drilled, Reamed, Rifled, Turned,