we use them for training carry factory clocks or Scheerer magazines in the guns and for spares. Honestly, I have had a dozen or more for about 2-3 years and haven't tested them to the point that I feel absolutely confident in them.

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Of the Troops & For the Troops

I bought some of these magazines when they were first offered. I took each one apart and inspected them inside and out. I found a few with extrusions inside the mag. well, no problem to removed the extra material in the well. Since then no problems with them. I understand South Korea adopted the Glock to some decree but were hit with high prices on the magazines, so they started manufacturing their own. They do seem well made especially the later ones coming in. ATB

I've got as all pile of them. I have had good luck with all but one of them I numbered the baseplayes so I could kelp track of any with issues. I also have some of the 33 round happy sticks I've use in my SUB2000's and JRC carbine with good luck. I've heard some have flashing inside the tube which is easily fixed. I've also read several folk reccomening replacing the springs with factory Glock or Wolff if you're having feeding issues.

Like Rob says, I carry factory Glock mags and use these for range time and informal competitions.