Shaw Barrels AR-10 Barrel Features The Shaw Barrels AR-10 Barrel is chambered in 22 Creedmoor a cartridge built to push small diameter high ballistic coefficient bullets at exceptional velocity for flat trajectories and strong wind resistance at distance. Its 1 in 8 inch twist rate is matched to stabilize those long for caliber bullets maximizing the cartridge s inherent long range potential. The rifle length gas system times the gas impulse for smoother cycling in a 20 inch barrel an important factor for maintaining accuracy over repeated strings of fire. A .750 inch gas block diameter with a dimpled gas journal ensures the gas block indexes securely on the barrel. Machined from 416R stainless steel and finished with a spiral fluted HBAR profile the barrel sheds unnecessary weight while the fluting increases surface area for improved heat dissipation during sustained shooting. The bead blast matte finish gives the barrel a consistent non glare surface that holds up well in the field. Built to fit the DPMS LR-308 Gen1 pattern upper receiver this barrel drops into the AR-10 platform most shooters are already familiar with. Its 1/2x28 threaded muzzle accepts standard muzzle devices making it a complete accurate upgrade for long range 22 Creedmoor shooters. Shaw Barrels AR-10 Barrel Specifications Manufacturer: Shaw Barrels Type: AR-10 Barrel Caliber: .22 Creedmoor Barrel Length: 20 Barrel Finish: Bead Blast Matte Barrel Material: 416R Stainless Steel Barrel Description: HBAR Profile Spiral Fluted Barrel Type: Rifle Length Twist Rate: 1:8 Gas Block Diameter: .750 Thread Pattern: 1/2x28 Compatible Hosts: DPMS LR-308 Gen1 Pattern Upper Weight: 2.95 lbs Available At: GrabAGun