Replaced my USP9 SD's internals with a Match trigger kit, so I have some extra parts laying around. The pistol is AI coded with less than 200 rounds through it, so it should be all the updated parts. Included are the hammer, catch, trigger, hammer spring, trigger return spring, and sear spring. This is a good way to update your older USP for cheap!
$50 plus shipping, discreet Paypal gift only. Pics upon request. Thanks for looking!