Increase accuracy and improve performance when upgrading your original factory barrel. Tac-Hammer Package includes barrel cantilevered optic rail and front threaded compensator. - Tac-Hammer�s Rigid-Core Barrel for Ruger�s 10/22 (RCB-22) delivers the benefits of a bull barrel�s larger diameter and related stiffness � greater accuracy and repeatability of shot � without the added weight. A rigid-core stepped barrel design is encased within a post-tension aluminum shroud offering the rigidity of a bull barrel with a significant reduction in weight. Improve rifle accuracy performance shouldering and portability - Barrel: P4140 Chromoly steel with heat and rust resistant coating - Shroud: 6061 aluminum with durable Cerakote coating - Top Rail/Compensator: 6061 aluminum with color matched Cerakote - Twist: 1/16 Twist - Threaded Barrel End: � x 28 � Fits common compensators or suppressors - Barrel OD: .920 - Barrel Length - Without compensator � 16 - With compensator � 17.25 - Exposed Barrel w/comp � 15.9375 - Includes Bentz Chamber - Made in USA