Those are really tough to come by. Try Gun Parts (the old Numrich).

Hi guys, I have a 1932 vintage model 14 and am looking for a rear sight part. Because it is a later model it doesn't have the wheel rear sight but has one with a stepped elevator. It also has (had) a small sheet metal insert in the middle of the sight that has a vee on one side and a U on the other side which could be switched around for the desired sight picture, this was held in place by a small screw and was able to be moved for fine elevation adjustment. Does anyone know where I can possibly find one of these inserts or who could make me a new one? THANKS!

Thanks, I already tried Gun Parts and Western Gun Parts. I might have to try and make one?