I�m trying to put a fiber optic sight and a peep sight in a 12" barrel 45/70 contender. My problem is that I haven't been able to find the fiber optic sight front sight. I called Williams, they have a ramp and fiber optic front site, but the ramp won't fit the front holes and need to be drill and tap to match the ramp, I don't want to do that unless is absolutely necessary. Can someone tell me were I can find the fiber optic front sight that will fit the originals holes? Thanks guys for all your help.