AR15/M16 MAG Orlite 30 Round
sarco has a few IDF surplus orlite 30 round mags for $19 each.
there supposed to be the steel reinforced one on the feed lips so they may be OK.
it seems like i did shoot a few of them and they did OK--
it is the thermold 30s without the steel reinforced lips that caused the problems.
i figure those steel mags MAKO sells are probably better--however they may or may not be in stock --these are for the moment anyway.
if your hurting for a 30rd ar mag--it might not hurt to give a couple of these a try--