X-RING PERFORMANCE HD [Heavy Duty] are lightweight highly accurate and easy-to-install barrel upgrades for the Ruger 10/22. If you're looking to upgrade your current 10/22 barrel with a lighter and more accurate solution we offer a variety of options to choose from. Our X-RING Barrels are also available in a variety of colors if it's time to upgrade or if you're building something unique. - Designed with the competitive shooter in mind for very high round count. Uniquely designed hardened stainless steel interfacing barrel shank allows for greater rigidity between receiver and barrel. Intended for extended round count performance and reduced breech face wear. Hardened stainless steel muzzle and threads provide reinforced suppressor attachment. The Performance HD barrel is designed to deliver match-grade consistency accuracy and durability. The updated design of the Performance HD barrel increases overall longevity and continued performance. Designed to upgrade your factory 10/22 barrel or as a component for your next rifle build. - Chamber: .22LR - Weight: 21 oz - Barrel Length: 16.5 - Barrel Diameter: 0.920 - Barrel Profile: BULL - Rate of Twist: 1:16 - Target Crown: 11-Degree - Threads: 1/2 X 28