Once I added the shoulder stock to the M712, the rear sight became more than just an ornament. The whole package can be surprisingly accurate. Trouble is the sight hinge is way too loose and reduces the windage to guesswork. The pics show just how loose with a pin drift.
Pin is loose in the actual sight, but still fairly tight through the holes in the slide.
The fix ...
1) Tap out the pin holding the sight. Pin is knurled and must come out the left side
2) Remove the sight and fill the hole with epoxy (just the hole in the sight, not the holes in the slide!)
3) Re-drill the hole (0.076" dia)
4) Tap the pin back in
The pin measured 0.077", and will be a light tap fit through the sight.
Note that there is still no provision for windage, but the rear sight notch is easy enough to cut or file oversized.
Then you can attach (drill & tap) a small notched plate to the back of the sight which can be moved around.
Pin is loose in the actual sight, but still fairly tight through the holes in the slide.
The fix ...
1) Tap out the pin holding the sight. Pin is knurled and must come out the left side
2) Remove the sight and fill the hole with epoxy (just the hole in the sight, not the holes in the slide!)
3) Re-drill the hole (0.076" dia)
4) Tap the pin back in
The pin measured 0.077", and will be a light tap fit through the sight.
Note that there is still no provision for windage, but the rear sight notch is easy enough to cut or file oversized.
Then you can attach (drill & tap) a small notched plate to the back of the sight which can be moved around.