Finished up the test video for the Magpul Gen M3 PMAG where we (me and my work buddy who conveniently has a SCAR 16 that I could use but that range wouldn't let us film ) used these mags in 5 ARs and the SCAR 16. Did a drop test with a fully loaded mag on concrete and ran some crappy ammo through them with 0 issues what-so-ever to report.
All in all it seems Magpul has another winner on their hands. If you like PMAGs but want a little more versitility in what guns you can run them in they're a good choice. Of course, the old (now called PMAG MOE) PMAGs are still great as well and now they're priced lower which never hurts.
Here's the test footage: