It has match trigger kit and grayguns reset!
I see no reason to use the overtravel screw in the trigger it does move a little so all of a sudden SA doesn't fire! I don't want to have to take an Allen wrench to the range every time I want to shoot this gun!! Simple is best!
Also a HK45C mag release 234270 is a great upgrade to all USPs.
As for the moving screw, perhaps some blue loctite can help?
IMO, if the overtravel screw is gonna move, it's going to screw deeper into the trigger and increase the overtravel.
Remove the overtravel screw and pitch it in the garbage
I would not though the screw away in the chance you might sell the pistol down the road.
Put the screw in the plastic bag in the case just in case you need it later. Trying to get one later will be a pain if you need it.
HK - No Compromise
Or just blue loctite it and then screw it in all the way...