They do make (made?) a Flash Suppressor that you can connect to a Knights QD can with an adapter.
The B.E. Meyers design was also licensed by Surefire around 2010 or so, those Flash Hiders will fit the current SOCOM line of suppressors, but chances are you will not be able to get that model as they are only selling the 4 prong FH to the MIL, the 3 prong which is inspired by the B.E. Meyers is what is commercially offered.