I have a USP 9SD with a match trigger installed, an MK25 P226 with SRT installed and threaded barrel, and a P226 ST with a threaded barrel. All have hosted my 9mm suppressor and all do it really well. The MK25 has the best trigger and I shoot it the best. The USP9SD is the precursor to the tactical and did not come from the factory with the HK match trigger like the tactical does. I fixed that as soon as I purchased it, but the trigger still blows like most HK triggers. It is probably the best host for the suppressor and has the bonus of being able to be carried cocked and locked. I shoot the MK25 all the time because it’s super fun to shoot and only take out the USP if I’m shooting with the suppressor. If my choice was to have a bad ass novelty suppressed gun I’d pick the USP. if I wanted a gun I was going to shoot all the time that could host a suppressor I’d pick the MK25.