I got a pair of new guard screws today. I did not try the rear one but the front one has a head diameter that is too large to fit in the hole. It seems to be a little larger then the old one. So I am grinding the bottom of the head of the old one to get it to bottom in the guard hole, hopefully that will work. The trigger guard is new old stock that I bought 25 or 30 years ago, I think it was made as a spare part for the M38 version, I could ream out the hole that the screw head fits in but I would rather mess with the screw then the guard.