My ML is a T/C 45 Hawken, with the original sights. My eyesight has over the years gone from 20/20 to a state where, while not bad, it is reduced to a point where bifocals are necessary. Farsightedness is the problem. It has reached a point to where I am experiencing difficulty getting the sight picture I want; mainly due to the smallness of the groove being blurred. I have started to think that replacement with something like a buckhorn rear sight might help. While I appreciate the adjustable rear sight of the T/C, the idea of a bigger rear sight is appealing. Am I about to make a mistake? Or, is there something I'm not seeing in this situation?