ericoak
don't drop Aboma on me
I would assume magpul would do thorough testing, but I haven't handled one or fired with one so it would be unprofessional to say they are good, bad or indifferent. I'm very interested in these though because glocks mags have failed on me, especiay at the magazine catch (wear).
All I own for AR's in 5.56 that are not drums or surefire are pmags. I trust them very much. I'll take it further and say that I wouldn't trust an AR as much without the magazine improvements in the past decade the magazine was always the weak point of the AR and mags like the Pmag changed my perception of the finnicky AR magazine. I improve my pmags with cs flat wire springs to make the feed rate more consistent. Magpul doesn't use CS springs for or rosin reasons though. If a CS spring corrode it looses it's surface it degrades rapidly.
Thanks for the info Chad! I have mostly Pmags as well, although I do have some aluminum GI mags in case it turns out that polymer does unexpectedly degrade over long life spans. Although the more I think about, my future grandkids should just be able to print more magazines if that does turn out to be the case.