Tactical Solutions 1022TD-MB X-RingThreaded Takedown 10/22 Bull Barrel, Matte Black- Highly accurate .920 diameter replacement bull barrels for the Ruger® 10/22 Takedown®. These 10/22 Takedown barrels fit our .920" diameter Magpul® and Hogue® Takedown stocks. They come fully assembled with the standard Ruger® 10/22 Takedown® locking mechanism, making the switch from the factory barrel a breeze.