Volquartsen Firearms Lightweight Carbon Fiber Barrel Ruger 10/22 1-16 Twist 1/2 x 28 Non-Threaded. A stainless steel barrel fitted with a woven carbon fiber tube creates an air space between the barrel and sleeve helping the barrel stay cool under rapid-fire conditions. The rigidity of the carbon fiber tube allows us to put the barrel in tension minimizing barrel vibrations typically found on smaller barrel diameters. Specifications for Volquartsen Firearms Lightweight Carbon Fiber Ruger 10/22 Non-Threaded Barrel: Manufacturer: Volquartsen Firearms Color: Stainless Steel/Carbon Fiber Finish: Stainless Steel Caliber: .22 Long Rifle Barrel Length: 16.75 in Barrel Profile: Bull Threads per Inch: 1/2x28 Barrel Twist Rate: 1-16 Barrel Material: 416R Stainless Steel Flutes: No Barrel Shank Diameter: 0.686 in Barrel Breech Length: 0.75 in Gun Make: Ruger Gun Model: Ruger 10/22 Weight: 20 oz Condition: New Fabric/Material: Lightweight Carbon Projectile Caliber: .22 Caliber Package Contents: Volquartsen Firearms Lightweight Carbon Fiber Ruger 10/22 Non-Threaded Barrel What firearm models does the manufacturer say Volquartsen Firearms Lightweight Carbon Fiber Ruger 10/22 Non-Threaded Barrel is compatible with? The manufacturer says that Volquartsen Firearms Lightweight Carbon Fiber Ruger 10/22 Non-Threaded Barrel is compatible with Ruger 10/22Volquartsen Firearms VF10LCF: Lightweight Carbon Fiber Barrel Ruger 10/22 1-16 Twist 1/2 x 28 Non-Threaded