Quickly and easily remove or replace the handguard on your Smith & Wesson (S&W) M&P15-22 using the S&W M&P15-22 Barrel Nut Wrench by Tacticool22. Using the S&W M&P15-22 Barrel Nut Wrench by Tacticool22, you can: Tighten a loose barrel nut on the S&W M&P15-22. This is helpful if accuracy is starting to deviate or you're getting a lot of "flyers." Remove the factory bar