I've got all the different size USP 9mm magas . A 15 round mag is fine unless you are shooting competitively . As a matter of fact preferable as you can practice swapping mags .
I've got one of the early VP9's and have never had a malfunction of any sort through 26,000 some odd rounds . I've used the same 4 15 round mags loading 10 rounds per mag. The followers have deep gouges in 'em but still feed just fine !
I'm tired of all the tinfoil hat conjecture bullshit . I got mine back in March . You want to come into the University System in NC , They should add this to the liist . https://campushealth.unc.edu/services/immunizations/north-carolina-required-immunications-entering-students
Gotcha ! That's one reason I didn't mention who told me about here . I was looking around and my post count of 67## is # 10 in post count ! When I saw that I realized a lot folks must have bailed .