The new X-Ring Open Sight barrels are 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 chrome moly steel liner with a polished 11 degree crown. The X-Ring Open Sight barrel comes with an adjustable rear sight and green fiber optic front sight. FeaturesImproved accuracy in a lightweight packageGreen fiber optic front sightThreaded for multiple muzzle attachment options