No problems, just that the springs are weak, as well as the floor plates weak also, I have a few of the ETS mags and replaced the springs with factory springs and Glock floor plates. Much more reliable for a range mag, I learned my lesson, all I buy now are factory mags.What issues have ya had with ets mags? I have a 12 rnder for a g43 and two flush 7 rounders for a 43. Also a 32 rnd for g19. No issues so far.