YHM, in cooperation with Sound Technologies, is proud to bring you the Phantom Sound Suppression System. The proven performance of YHM's Phantom Flash Hider eliminates 99% of muzzle flash while the Sound Technologies baffle design (U.S. Patent #7,073,426) reduces muzzle noise by up to -35 dB. The fast attach design (Patent Pending) allows you to permanently install the Phantom Flash Hider and then install the Sound Suppressor without the use of tools when sound suppression is desired. Our patented Phantom Flash Hider system holds the sound suppressor firmly in place by hand tightening and allows the sound suppressor to be removed by hand when no longer needed. A patented gas seal keeps the threads clean so the suppressor will not bind, making removal a breeze. The Phantom Flash hider supports the sound suppressor in two places making misalignment nearly impossible, even if the sound suppressor is not fully tightened.