Have found these through the years...
The top one that looks like the first micro click style sight I actually made from a modern sight years ago.
The K22/40, Mexican micro click is a NOS piece that was never installed in a gun, fit or finished. Ready to install in that 22/40 or Mexican tribute revolver? Lol Not sure what Im going to do with it....Was excited to find this to say the least!
Corrected by 410 below, probably an aftermarket King white outline blade.Thanks!
Just thought I would share, thanks for looking.
Matt