A single Ghost-M series suppressor can be used on a variety of host firearms with different barrel threads by quickly and easily swapping out the threaded piston in the rear of the suppressor. This Dead Air Armament Ghost-M Piston is precision machined and features a matte finish. - Specifications and features: - Dead Air Armament Ghost-M Piston DA405 - Converts Ghost-M to .578x28 - Fits Ghost-M Suppressor - Matte Finish