Heya all, Have a question here that I would like to get some clarity on. I am building an AR-10, Armalite upper and Lower, Larue 13.2 rail, 16 in LW-50 barrel, and FSC30 so far. I would like to use an Armalite BCG, but they have proven impossible to find. DSG, Ranier, even Armalite do not seem to have them. This has brought me to look at DPMS instead. From my research I have read that a DPMS BCG will work in an Armalite upper with an AR-10 Barrel, but the you need to have an Armalite bolt. Now I have seen this on this site 'Dimensionally Armalite and DPMS bolt carriers groups are nearly identical to within a few thousandth's of an inch of each other. This means they are interchangeable. However the one thing to keep in mind is you cant interchange the bolts between the different brands of bolt carrier. This means only use an Armalite bolt in an Armalite bolt carrier and a DPMS bolt in a DPMS bolt carrier.' Does this mean I can in fact use a DPMS BCG (including the bolt) with an Armalite spec'd barrel (I really wish BCM would start making .308 BCG's)? Any help is appreciated. Thanks much