Before I order I am trying to figure out which one I need and I really can't get the information I understand from their website. I have ordered a couple of front sights and that was easy. This time not so much. I have one of the early Big Boys in 44 mag with the hex barrel. I have an early Henry designed canti lever scope mount on it which attaches to the two holes that were under the rear sight. Lots of folks did not know they were there. Anyhow I think I am taking the mount and scope off and going to a peep. I just can't figure out which one attaches to the two holes that were under the rear sight and whether or not I need a taller front sight. Is there any way to contact skinner. I sure can't figure it out from the site if there is one. If I am going to be dropping a hundred bucks I want to know what I am doing.