Criterion Barrels 20in AR-10 Rifle Length Nitrided Gas System Barrel .308 M118 LR 1-11 Twist Black 1020S-HYR-N. 62x51 NATO and .308 Win ammunition and the chamber is optimized for heavier longer bullets. Criterion Barrels crafted these Rifle Barrels...
Criterion Barrels 20in AR-10 Rifle Length Nitrided Gas System Barrel .308 M118 LR 1-11 Twist Black 1020S-HYR-N. 62x51 NATO and .308 Win ammunition and the chamber is optimized for heavier longer bullets. Criterion Barrels crafted these Rifle Barrels...