Criterion Barrels 20in AR-10 Rifle Length Gas System Barrel .308 M118 LR 1-11 Twist 416R Stainless Steel 1020S-HYR. Criterion Barrels uses button rifling and manufactures these AR15 Barrels from gun barrel quality steel. Criterion Barrels AR-10...
Criterion Barrels 20in AR-10 Rifle Length Gas System Barrel .308 M118 LR 1-11 Twist 416R Stainless Steel 1020S-HYR. Criterion Barrels uses button rifling and manufactures these AR15 Barrels from gun barrel quality steel. Criterion Barrels AR-10...