AR-15, M-16 & M-4 (and I assume FN SCAR) all typically use the same mags (in .223/5.56). Get into some other calibers and some bets are off.
MSgt, USAF, Retired
NRA Life Member
Liberals are constantly telling us about the poor and oppressed in this country. With that in mind, why do they feel the need to keep importing poor people from other countries?