I'm heavily considering one for my 12.5.

I previously thought I'd run a surefire socom mini 2 on it, but...

I'm really not impressed with how easily the SF cans carbon lock on, and on this gun I'd like a bit more quiet, as well. Surefire has a higher tone pitch than KAC QDC, I'm told.

Is the QDC system also going to carbon lock? How is the MAMS? The QDC can will only add about 1.3oz vs a SF Mini+SFMB.

Overall impressions?