TC made a set that replaced them. The base screwed in the holes and the base had a dovetail so you could drift the back V. This is the back sight. It had a different sight for the front, was a straight(Patridge) blade. That went into dovetail on front. I have a set, not for sale. These were made to shoot in primitive matches where you had to have fixed sights. Front part no 9060. Backis 9070. These fit Hawken, Reneglade, and Penn. Hunter. Mine were 8.00 each. Dilly