Proof Research Zermatt Origin Prefit Barrel 223 Remington 26" Stainless Heavy Competition 1:7" Twist 4 Groove

Proof Research Zermatt Origin Prefit Barrel for AR-15 chambered in 223 Remington. 26 inch stainless steel barrel with 1:7 twist, 4 Groove rifling, heavy competition profile. Prefit design for straightforward installation. Barrels are manufactured from 416R stainless steel and are double-stress relieved, drilled, contoured, and reamed to bore diameter, then cut rifled, lapped, and borescoped for precision.