Anybody use or test them?
I just picked up a TRP Operator, and it came with an Archangel mag. I had no idea what it was at first and figured the AA was Advanced Armament or something.

A little research, cause I was impressed with their form and smoothness over my Chip Shooting Star mags.
Found them and realized they are ProMag, so now Im hesitant.

http://www.cheaperthandirt.com/product/82723

At $1359 a piece, Im hesitant, but at the same point, they seem pretty decent.
Google has turned up little on reviews.

I have only found 1 negative review that they don't lock the slide back on a Springfield 1911 GI.

Help! Before I get a chance to put a few hundred rounds through it.

Disregard, answered my own question.

Will not lock back the slide