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 its legacy technology, single piece, direct thread piston counterparts. This system provides a rapid, secure attachment to the host pistol.Features :Patented CAM-LOK(Covert Application Mount - Locking) universal QD piston attachmentsystem3 mounting positions, 120 degrees separatedfor rapid mountingInternal taper surface locks in place with interfacing barrel adapters and drastically reduces or eliminates common baffle/end cap strikesCompatible with Universal QD pistons barrel adapters (sold separately)Total system weight is identical to legacy direct thread pistonsH900 heat treated for improved durability and wear resistance17-4 stainless steel material