YHM, in cooperation with Sound Technologies, is proud to bring you the Phantom Sound Suppression System. The Sound Technologies baffle design (U.S. Patent #7,073,426) reduces muzzle noise by up to -35 dB.

Caliber................................................................................... .223 / 5.56
Overall Length......................................................................6.875 Inches
Diameter..............................................................................1.500 Inches
Weight.................................................................................. 20 Ounces
Suppression Level........................................................................ -35 dB
Material......................... Chrome Moly Steel and Heat Treated Inconel 718
Finish..................................................................................Matte Black
Method of Attachment.......................................................1/2"-28 Threads

Warranty:

YHM offers a lifetime warranty and will repair or replace, free of charge, any sound suppressor manufactured by YHM. This warranty does not cover damage to the sound suppressor and/or host firearm resulting in whole or in part from criminal or negligent use, improper or careless handling, modifications, defective, improper hand-loaded, or reloaded ammunition, or neglect. This warranty does not cover damage to the sound suppressor or host firearm due to improper installation of the Sound Suppressor, or an improperly threaded barrel. The minimum barrel length for which the suppressor is warranted is 10.5 inches. Any repairs not covered by this warranty will be charged to the owner.
“I received the 9mm Cobra Suppressor that I had ordered from you at the Shot Show.  I have installed the suppressor on my Glock 17 according to the installation instructions.  I have tested the suppressor with a variety of ammo, ranging from standard 115 grain Winchester to 147 grain Sub Sonic LE ammo.  The results are: Your product functions flawlessly! No complications with ejection at all. Furthermore my main concern (point of impact) was put to rest. My groups are bullet hole through bullet hole!  I found myself point shooting fast and more accurate with your suppressor.  I’m looking forward to carrying your full line of Sound Suppressors.  The quality of the finish and the overall quality of the product are outstanding.”
-Felex Ukhtman, President, American Vintage Gun, Inc. YHM Authorized Dealer