Marbles makes a tang sight with repeatable clicks, both windage and elevation. Multiple stems are available for distance/load adjustment. Depending on the vintage of Model 94, no extra holes required. Couple with a Globe type front sight, changeable inserts, you'd have a very nice set up capable for multiple uses.
R.
I’m into the 140gr Monoflex right now, makes it a legitimate 200 yard rifle like those NBT’s would, quite a game changer from the old FPs.