I picked up a new USP Custom Sport in .40S&W, and in the case there were 4 O-rings for a .40-calibre USP barrel. The Custom Sport does not have an O-ring barrel, so I have no idea why the O-rings were included. Maybe some dude at the HK factory in Germany was in a hurry to leave for lunch, and made a mistake..... anyone else get O-rings with their USP CS?


















































