The PTS Syndicate Griffin M4SDII gets reviewed by Jonathan Higgs of Airsoftology. Fully licensed by Griffin Armament the M4SDII is a mock sppressor designed for AR platforms and has a unique SDQD mounting interface... "The Griffin M4SDII appears mild mannered at first glance, but this licensed mock suppressor for PTS has a unique trick up its sleeve; which Jonathan explores in this Airsoftology review."