Training with PMAGs vs USGI

[black22rifle]

Its possible something could be out of spec but I doubt it. I have several of each and no matter what method I try only the D&H give me problems. I tried searching for specs such as the magwell length/width and mag catch height but I could not find anything.

[Failure2Stop]

If I had a known-good lower, and several brands of magazines, and only one brand of magazines gave me issues, I would not own any of the brand that didn't work in my gun.
Just because a magazine doesn't work in your gun doesn't necessarily mean that it's a bad mag, just that it is a bad mag for your gun.
There are tolerance stack issues that can make good guns not work with good mags. There are also bad runs of good product.

[sava]

I would bring both, in case you need back-ups. During the duration of the course use the mags that have proven themselves to be reliable in your weapon.

[JaxShooter]

I just ran an advanced course with a bunch of D&H mags. They must be on the low end of the spec because they rattle like shit in the gun. I hadn't used them before, though, and wanted to see if it would affect functionality. I had numerous seating issues and had to SPORTS more than once. I never have any issues with my pmags or C Products. What I learned is that the D&H make ok training mags (I don't mind having a couple of issues during the day because it reinforces my ability to handle the situation in real life) but I won't bet my life on them. Defensive ammo will be kept in known good mags.