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AR10 Compatibilities: Fitting Barrels, Bolts, and BCGs to DPMS Compatible 308/7.62 NATO RiflesJanuary 31, 2018 by Eben BrownI just got the whole AR10 Armalite/DPMS barrel compatibility issue all straightened out in my brain and thought I would share what I know about it: Unlike the AR15 guns that all conform to a "milspec" standard, the larger frame "AR10" guns are different and we need to know what works with what. To begin with, "AR10" is the name of the 308 gun made by Armalite. It's n …