Machined from 6061-T6 aluminum, the X-RING barrel has been designed to make your Ruger® 10/22 rifle lighter and significantly more accurate. The X-Ring barrel fits all Ruger 10/22 receivers and most aftermarket 10/22 style receivers. Accuracy is enhanced by a rifled Chromoly steel liner with a polished 11-degree crown.
O.D.(outside diameter): .920"