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. Optional threads allow easy addition of a TacSol suppressor or compensator. With plenty of color options you will have no issues finding a barrel to match your custom rifle. - **X-Ring Barrels are compatible with the Ruger� SR-22 Rifle. - Weight: 15oz - Length: 16.5 - O.D.(outside diameter): .920 - Threads: 1/2x28 - Twist: 1:16 - Matte OD