Since I picked up my first HK (HK93 IC Date Code) way back in 1986, a warranty repair or replacement(?); never. Worn out parts due to usage: I have one problematic USP45 12 Rnd mag that doesn't lock the slide back on occasion and could probably use a new follower (or try the old spring stretching effort - yes, that helps), but I'll live with it for range use. I've never sent in any of my warranty cards for registration; was I supposed to? They're HKs. 'Nuff said.