He brought them back from where? If he imported them from China he broke more laws than I care to think of.
Are these actually MOE's? I can't figure out what he means as all of my PMAG's only have two small circle date stamps.
Are they PTS and the guy is a ditz?
The only other mold stamps I can think of are early Gen II's that didn't have the NSN stamp.
The Korean fakes are obviously not Magpul, and differ enough I don't know that Magpul could pursue them legally.
The ProMags aren't marked Magpul and are obvious crap just picking them up.