HK USP 9mm full size parts. They are in good used shape. Include the hammer, trigger, springs, pins. The finish is the factory black. Parts Questions and Requests. This would include fitment, period correct installation, additional pictures, etc. I would love to help you in any which way I can! Please be certain that all vintage parts are installed correctly and safely. We recommend a visual inspection and installation by a qualified gunsmith to assure utmost safety. I always strive to be fair and honest in my auctions!