QUOTE (opksrj @ November 2nd 2009 4:10 PM)

trying to decide on a SBR upper for an AR-10 build, but haven't found alot of resources for who is preferable in this market, I'd like something around 12.7"
That is because not really any manufacturers are doing .308 AR SBRs. One that comes to mind is POF. They make a 12 inch .308 SBR, but, be prepared to wait forever.