Coyote Hunter, I am not sure about the way the ft site is mounted on a remmy, but with a little metal working skill soldering, you can probably make a ft site from a number of things.
Brass and or sterling silver come to mind.
If there is a dovetail it would be easy to slice a slot in a silver dove tail bar and solder in a blade.
If there is a half moon cut then all you need is a blade and stake the blade in place.
The blade should be a bit to tall causing the point of impact to be too low, and you would dress it as you shot, to hit where you wanted, some point higher.
Only mentioning this because I see you asked twice.