Did HK ever make a USPC CT that came with a threaded barrel. I think they made a USPC45 CT but I do not know about the 9mm or 40. So is there really no correct way to suppress an HK USPc 9mm? Is the USPc 45 CT the only way to go suppressed with a USPc? I just purchased a USPc 9mm V1 and was curious what I might need to do to suppress it. Thank for all the info.