Buzznrose
Member
Be careful, NOT all PSA uppers will work correctly with all DPMS pattern lowers.
My buddy has a PSA upper in 308 that will. NOT take p-mags, and will not lock open when on my DPMS pattern lower.
Yes, I know the mags lock into the lower...but, with my friends upper, they wont lock in...steel mags work perfectly.
thanks for adding this. Yes, not much standardization on “AR-10” platform between companies. Actually, only Armalite has “true AR-10”...PSA, S&W, DPMA, etc. have their own specs on some parts...