My PS 90 has been short barreled and threaded - soon coming our of NFA jail..Any suggestions on a good suppressor for this. it has such a loud crack when normally fired even from the standard factory barrel. I think that Gemtech makes a dedicated 5.7 suppressor, but my LGS has quite a collection of used and new suppressors on hand and the Gemtech is NOT one of them. Anybody running one they like?