Putside of normal wear and tear, I have not had any issues with my aluminum "GI" magazines. However, I most exclusively use PMags nowadays.

That being said, I think this is a good idea. Too many GIs will buy the cheapest magazines they come across, use it once, and then declare it reiable enough for combat.

I know an AD AF type who is convinced that his Olympic Arms Carbine and Troy polymer magazines is the best combination even though he has never put these through a multi-day training course. But since he fancies himself an SME of sorts (no, he is not SF) you can't teach him anything because he already knows it all.

I perzonally have no problems using GI mags as long as they are made by the top manufactureres. YMMV.