TAPCO 10/22 Carbon Fiber Drop-In Black Barrel - Upgrade your Ruger(R) 10/22 rifle with the TAPCO 10/22 Carbon Fiber Drop-In Barrel. Specifically designed for the .22LR caliber, this barrel is ideal for target shooting, plinking, and small game hunting. With a Bentz Chamber design, you have a better bullet-to-chamber fit. Plus, the black carbon accents will add to the overall design and look of your rifle. Drop-In Caliber: 22LR Bentz Chamber Length 16.5in Black Carbon Accents