I found I had an old Lyman steel aperture sight laying around and it is now on my second 45-70. I hate the sights that all manufacturers of lever guns seem to have installed. I've thrown many buckhorn sights in the trash where they deserve to be - total worthless sights IMO.

I prefer classic.
Semper Fi
I used to run with the hare. Now I'm envious of the tortoise and I do my own stunts but rarely intentionally