Shaw Barrels Bull Barrel Features The Shaw Barrels Bull Barrel is machined from 416R stainless steel a material prized for its corrosion resistance and the tight tolerances it holds under precision reaming. Its .920 inch diameter bull contour adds mass that helps tame barrel whip and heat drift during extended range sessions. The spiral fluting cut into the barrel strips weight from that bull profile without sacrificing the stiffness that makes a bull barrel accurate in the first place. A 1 in 16 inch twist rate is matched to standard .22 LR bullet weights for stable consistent flight downrange. Built as a drop-in replacement for the Ruger 10/22 this barrel lets owners upgrade accuracy without touching the rest of their rifle. The Bentz match chamber is cut for tighter headspace tolerances than a factory chamber which tightens group sizes with quality ammunition. A 1/2x28 threaded muzzle with a .400 inch thread length accepts common suppressors and muzzle devices without an adapter. At 2.8 pounds and finished in a bright polish this barrel is a straightforward way to turn a stock 10/22 into a genuine precision rimfire. Shaw Barrels Bull Barrel Specifications Manufacturer: Shaw Barrels Compatible Hosts: Ruger 10/22 Caliber: .22 LR Barrel Length: 18 Barrel Material: 416R Stainless Steel Barrel Finish: Polished Barrel Description: Spiral Fluted Bull Profile Diameter: .920 Twist Rate: 1:16 Chamber: Bentz Match Thread Pattern: 1/2x28 Weight: 2.80 lbs Available At: GrabAGun