Criterion Barrels AR-15 Barrel Hybrid Contour .223 Wylde 12.5 inch Carbine Length1-8 Twist 1/2x28 Thread Chrome Lined Finish 120 Black 15120-HY6. 223 Wylde Barrel. Criterion Barrels built these Rifle Barrels from 416 Stainless Steel for durability that...