Shaw Barrels AR-10 Barrel Features The Shaw Barrels AR-10 Barrel is machined from 416R stainless steel a material prized for its corrosion resistance and the way it machines to tight accuracy friendly tolerances. The bead blast matte finish cuts glare in the field while still shedding moisture and fouling easily during cleaning. A 1 to 8 inch twist rate is matched to the heavier for caliber bullets that .22 Creedmoor shooters typically run keeping them stable out to extended ranges. Straight fluting down the barrel removes mass and increases surface area for cooling without compromising the HBAR profile s inherent stiffness. The 20 inch length and rifle length gas system are paired specifically to extract full velocity from the .22 Creedmoor cartridge while keeping the gas system timing smooth and reliable. A 1/2x28 threaded muzzle accepts standard compensators brakes or suppressors for the AR-10 platform. The .750 inch gas block diameter features a dimpled gas journal that locks the gas block securely in place under recoil. Built to fit DPMS LR-308 Gen1 pattern upper receivers this barrel suits long range shooters and AR-10 builders seeking a precise drop in upgrade. Shaw Barrels AR-10 Barrel Specifications Manufacturer: Shaw Barrels Model: AR-10 Barrel Caliber: .22 Creedmoor Compatible Hosts: DPMS LR-308 Gen1 Pattern Uppers Barrel Length: 20 Barrel Material: 416R Stainless Steel Barrel Finish: Bead Blast Matte Barrel Description: HBAR Profile Straight Fluted Twist Rate: 1:8 Gas System: Rifle Length Thread Pitch: 1/2x28 Gas Block Diameter: .750 Weight: 2.95 lbs Available At: GrabAGun