Yankee Hill Machine developed this Q.D. Adapter to convert existing suppressors from other manufacturers to use a much simpler mounting mechanism. This is the same mount design that YHM has been using on Q.D. suppressors for over a decade. Due to its simplistic design, there is virtually no way to incorrectly install the suppressor and risk the chance of it coming loose, yet it provides easy removal.To install, simply remove your existing mount mechanism from your suppressor and thread on our Q.D. adapter using the factory wrenches that were provided with your suppressor. This will allow you to use YHM's Q.D. flash hiders or muzzle brakes which are sold separately. Features17-4PH Heat Treated MaterialMelonite QPQ Finish1-3/8"-24 Thread Pitch Allows the use of YHM 3102 and 4302 Q.D. Mounts to be used on the following suppressors:SILENCERCO HARVESTER .338/Big BoreSILENCERCO OMEGA 300SILENCERCO HYBRIDRMS 2 HOPAIIREX SILENTIUMKG MADE ROGUE XENERGETIC ARMS VOXDEAD AIR NOMAD