The Tactical Solutions X-Ring barrel has been designed to make your factory Ruger 10/22 lighter and significantly more accurate. It is machined from 60601-T6 aluminum for maximum strength and weight reduction. It weighs only 15oz and is 16.5" long with a1:16" twist rate and 1/2"x28 threaded barrel and has a .920" OD. Designed to fit most Ruger 10/22's and after market 10/22 style receivers. The barrel has a chromoly steel liner with a polished 11 degree crown. This barrel is silver.