E. R. Shaw Ruger 10/22 Barrels E. R. Shaw brand Ruger 10/22 Barrels have air gauged barrels, Bentz-style target chambers, match-target crowns, and excellent workmanship. As a Ruger 10/22 Barrel Replacement, these are an excellent choice. They'll give extreme accuracy potential to your Ruger 10/22. Available as follows: Factory Blue, .920" Dia, 18" length - This is probably the most bang for the buck as a no frills barrel that retains all of the features that deliver the best accuracy: Match grade bore and Bentz chamber with the target crown. Helical Fluted Stainless, .920" dia, 18" length - This is "Top-Of-The-Line" with E. R. Shaw's patented "helical" style fluting and match grade stainless steel on a match grade bore and Bentz chamber dimensions with the target crown. For more 10/22 Accessories, se our Ruger 10/22 Home Page.