Hi all, I was at a garage sale the other day and ran across 2 AR10 mags for $20, one an Armalite 10rnd and the other looks like a converted USGI M14 20rnd. By the title my question is obvious but by the laws of the 1994 ban I know the mags had to work in both rifles. But I have also read about people having to hold AR10 mags in the M14. Can someone set this story straight please.