Thank You Jim for the Email. What you said and what you attached helped a bit. I started lurking on some others forums and seen some nice pics and nice Details on the differences of all the different Military 30 Round Mags. I also been searching past posts here on Milsurps. One thing I can't seem to figure out on these few unmarked 30 rnd Mags that I have and work very nice I wonder who made them even those new Korean ones you see everywhere for sale have a mark.
Frank