Proof Research AR-15 Barrel 6.5 Grendel 20" Medium Contour 1:8" Twist Stainless

Proof Research AR-Style Barrel Steel 6.5 Grendel 20in 8 Twist 4 Groove 5/8-24 Thread Gas Length Rifle. Proof Research crafted these Rifle Barrels from match-grade carbon fiber that's wrapped around a steel inner tuber to create a stronger more durable barrel that will withstand the force of a rear-directed bullet impact. Through this innovative process Proof Research Carbon Fiber Wrapped Barrel Sleeves weld onto the barrel's cold-welded steel inner tuber to create a highly efficient barrel that saves wear and tear. With this high-quality Proof Research AR-Style Rifle Barrel you'll be enhancing your weapon build with one of the most efficient barrels out there. Specifications for Proof Research AR-Style Barrel: Manufacturer: Proof Research Color: Silver Barrel Profile: Contour 0.75GB Gas Block Journal Size-Diameter: .750 in Threads per Inch: 5/8x24 Flutes: No Included Accessories: Standard Condition: New Features of Proof Research AR-Style Barrel All barrels with Intermediate Rifle +1 Rifle +2 and Rifle +3 gas systems include the proper gas tube. Our AR-10 barrels use a deep feed system that makes the feed ramps compatible with the feed ramps in the lower receivers of both DPMS Armalite-styletyle rifles. It is recommended to double-check and ensure proper headspace before firing your rifle. Package Contents: Proof Research AR-Style Barrel Proof Research 100516: AR-Style Barrel Steel 6.5 Grendel 20in 8 Twist 4 Groove 5/8-24 Thread Gas Length Rifle