Lyman
I Found an excellent sight on Lymans web site, Ivory front and a white triangle for lining up the rear. I wanted an adjustable sight instead of a fixed buckhorn style. If you file down the front just use a 6 inch general purpose file and then smooth it out with some paper, A word of caution though you can go too far real fast. also wrap your barrel up in electrical tape its real easy to nick it with the file.