So I'm looking at that photo of all the neato toys that come along with the SOPMOD is a suppressor. My question is...how does it attach? Is it a direct thread on or a quick attach like the Gem-Tech or AAC's? I look at the F/S and it doesn't look like on of the modified types by the above mention companies. Can someone explain this to me. Pics would be great too.

Our M4 "QD" KAC Sound Suppressor is supp;ied with its own Muzzle Compensator (MC) that has the same basic demensions as the standard GI (A2 type) MC.  The rear of the suppressor has a latch that one lifts up as the suppressor is slid onto the MC.  Then the latch is lower and secured by a rotating locking ring.  The latch is at 12 o'clock and once installed, the suppressor does not rotate so its always right-side-up.  MC is heat treated and has carbon cutting grooves to aid in removal.

Cool, thanks...anyone have any close up pics?