Originally Posted by
Westicle
the original ar-10 (original run of 10k rifles 1955-1959) predates the ar15/m16 (1957) by a couple years..... technically speaking the ar15 should be a variant of the ar-10.
if nea successfully followed original ar10 drawings (adding an sp1 "bump" to meet current interpretation of "law") there should be no issues..... the magazine on the other hand may throw a rock in it.
ar-10a - stoner/sr-25 style (original pattern)
ar-10b - proprietary armalite (modified m14 mags)
i think they would be on safer ground using the m14 mags..... IMHO