Griffin Armament Barrel Adapter, CAM-LOK, 1/2X28 PI1228 The Griffin Armament CAM-LOK(TM) interface affords the user the ability to convert the suppressor to a much faster and more secure mounting solution on browning style action (tilt barrel) pistols vs it's legacy technology" single piece" direct thread piston counterparts. This system provides a rapid" secure attachment to the host pistol.