I bought these thinking they were uzi mags. They fit in my uzi, but not easily. They are tight on the sides, and don't easily get caught by the mag catch. The plastic bases were also different. I didn't see any markings on them. The oval cuts in the side of the mag near the top are different as well. In the pic the mag on the left is an imi mag, that I use in my uzi. I didn't try the 2 on the right yet.
Looks like they are "Colt cut" Uzi mags used in a 9mm AR conversion.
Those are USA brand with the plastic baseplate...pretty much junk mags. Sorry bro.
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