I've wanted to run a USP expert 9mm in production but there are a few major issues I see with it:
-the mag release is way too small and using an extended one for an HK45 will destroy the polymer magazines since it's a metal part
-it's poorly sprung
-even if I found a suitable extended mag release I still don't like paddle mag releases
-it's an expensive, outdated gun (around $1100), why should I buy it over something that works better for as much or less money?
I still want an expert in .45 though as an outdoors pistol. It uses metal mags unlike the 9 and .40