Tactical Solutions X-Ring Takedown Barrel, 16.5, Matte Black Finish, Threaded, Fits Ruger 10/22 Takedown 1022TD-MB X-Ring .22LR barrels are the highly accurate, premium, rimfire replacement bull barrels for the Ruger(R) 10/22 Takedown(R). The TacSol X- Ring Takedown barrels perfectly fit the .920" diameter Magpul(R) and Hogue(R) Takedown stocks. These barrels come fully assembled with the standard Ruger(R) 10/22 Takedown(R) locking mechanism, making the switch from the factory barrel a simple and easy.