Liberty Precision Machine Liberty Bell, Muzzle Brake, 30 Caliber, 5/8X24 Thread Pitch, Compatible with .900-24 Mounts, Nitride Finish, Black LPM-2010 Liberty is proud to announce the Liberty Bell Muzzle Break. Important Disclaimer: Use of This Muzzle Device May Void the Warranty Policy of Some Silencer Manufacturers. Liberty Precision Machine LLC Will Not Be Held Liable for Damage to These Products. Always Confirm Alignment Before Use.