I have a few questions about my AR's flash hider. My Noveske upper came from Noveske with a Smith Vortex installed on it. One of the things I was wanting to know was, if I were to get it removed and had an AAC 51T Blackout installed (same thread pitch for both) would I need to have my barrel turned down anywhere in order to accept it or a suppressor? Another question I have is, Once I got a sppressor for my AR, would I need to change out the buffer if I'm shooting out of a 14.5 inch barrel? Almost lastly, this kinda fits in with my last question, would i need an adjustable gas-block for my upper or would it cycle OK with out one? And finally, Is there anything else I should change out to better accomidate fireing with a suppresor?