I'd like to remove the firing pin from my HK USP and clean the channel. It appears that the retaining piece needs to be depressed and rotated, then removed. Unfortunately, I can't convince the #*&$@ little piece to do so. HK apparently thinks that I'm a blithering idiot (and they may be correct) and doesn't describe this procedure in the manual. Since I have done this with a 1911 about a thousand times, I don't think I'd harm myself or strangers in the process.
Can anybody walk me through the removal and replacement process? Many thanks.
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