I recently picked up a Marlin 27-S in 32-20 and was wondering how to find a replacement front sight for it. The front sight base is still there, but the middle blade that had the ivory tip on it is missing. Looked like it was soldered in maybe. Also the rear ramp for the Rocky Mountain sight is missing. What model of tang sight was made for these? I am looking for all three, preferably original. Any info would be helpful. Thanks!