I bought a three each of the 9mm and .40, just because I could. Haven't tried them all, but the ones I tried worked fine. I also bought a dozen or so of the Korean standard capacity mags in both 9 and .40. Those I've tried worked fine as well, with the exception of a couple that didn't want to drop freely. I'm fixing those when I have time. Fortunately, Glocks don't seem to be as fussy about magazines as some platforms.
Savage