I'm doing some work on a 336 for a buddy of mine, & one of the things he wants is new sights. This gentleman has shot with open sights on all of his guns for over 50 years. He has very poor vision these days, & is having trouble seeing his sights. When I started talking scopes with him, he responded with "I don't want no dam scope"! What recommendations can you give me for good sights, for a half blind man, that seems to have a pronounced dislike for scopes? I would like to give him a longer sight radius also. Thanks!