Markus, I think either a trip to a gunsmith would get you a "generic" screw, not the hardware store, I doubt very, very much if they would have it. The best bet is a quick call to Customer Service, I'll bet they would throw it in a envolpe for you for free and would do it today if you called them early enough!!! (ask for John, he's great!)....<><.... :grin:
$85.50?....<><.... :-D