I "have" four AAC suppressors including a Ti-TAN-QD, Mk13-SD, 762-SDN-6 and a Ti-RANT. The Titan and Mk13 interface with specific adapters so there's no chance of a mixup. However, I have a number of 51T flash hiders on .308 and .22 cal rifles so that i can move the 762-SDN-6 between them. I've decided to buy either an M4-2000, 556-SD or SR-5 so that I have a dedicated .22 cal suppressor but it occured to me that the first two use the 51T interface. I could see a situation where I, or more likely someone else, attach a .22 cal suppressor to a .308 cal rifle. The SR-5 uses a 90T taper mount which I can't find on AAC's website but this would seem to be the obvious choice. Anyone else give much thought to decreasing the chance of mixing up suppressors?