12 weeks into it now and no malfunctions at all.
I've been shooting weekly, 50 rounds per mag, per range visit, so 600 rounds per mag.
Like most mags, the 7-round mags were tough to get that 7th round into, but (better than the factory mags) got easier to hand load by the 3rd range trip. No need for an UpLula.
As noted in earlier posts, full mags easily seat and lock in with the slide closed (not so with factory mags using factory spring sets).
I've seen posts about other brands of mags, where the shooter was at the range, dropped his/her mag and the base plate broke, sending rounds everywhere. Has anyone tried a 'Drop Test' yet? I have not, but may try it (on my front porch) when closer to the end of the test.
Someone early on, mentioned concern about the seams. So far, they seem to be doing fine. No signs of stress. Perhaps another function of a drop test?
Good to hear that everyone is enjoying them as much as I do.