|These are not the same magazines shown in the picture. The sidewalls are thinner and the redesigned, "improved" M-series are not as sturdy as the pre-March, '09 magazines. They are still fine for casual range use, but you should seriously stress-test this new design prior to committing them to a professional role.
Brand new, out of the bag, each one of the magazines I ordered failed the Go/Nogo gage integrated into the snap cover. The rounds are not held securely after even a two-week storage period and the magazine rattle loudly when fully loaded.
Again, it's a great magazine for range use, but don't rely on previous "advertising" to convince you of the Magpul quality. As far as I'm concerned, Magpul dropped the ball in their attempt to fill all their orders...|