Want to upgrade your XD-M pistol to be suppressor ready? Then be sure to check out these threaded barrels designed for the XD-M 4.5. These drop-in threaded barrels feature a black Melonite coating for rust-resistance and lubricity. The barrels come with included muzzle caps to protect the threads when not in use. For use in any 4.5″ XD-M or XD-M Elite pistol configuration. WARNING: Caliber of barrel is intended only for use in the original caliber of the firearm. You cannot change the caliber of your firearm by purchasing one of these barrels.