While working on a rare old 404 by Schuler (manuf. 1923) I found one of the two rear leaf sights missing. The rifle has a fixed rear sight, a folding leaf ahead (300 yd), and a folding leaf (200 yd)behind the fixed rear sight which was missing. When I fabricated the sight i found that there was no mechanism to hold it in place, also the exisitng 300 yd leaf did not stay put when flipped up. What is the standard mechanism to hold flip up leaf sights in place?? could the experts help??
Regards