Ok, so despite my best efforts on penny pinching, i decided against every can i was considering and went for the AAC m4-2k which was the one i really wanted anyway.  I ordered it at my dealer today.  I was wondering if anyone knows of anywhere that has those QD flash hiders that they use in-stock.  I know it comes w/ one, but i will be getting another upper for my ar sometime soon and figure ill just use the extra on that one.  I would really like to get one now or soon so i can have an upper w/ one installed when the can comes round the mountain.  Also, anyone know if aac requires the flash hider to be installed by a "qualified gunsmith?"  Thanks and good day all.

Contact member (BookHound). He has more AAC stuff than anybody.