That is one thing neat about a smoothbore. No rear sight to have to line up with the front especially with 69-year-old eyes. Just point the gun and put the front sight on the intended target. Your consistently placed cheek weld and eye is the rear sight.I wonder if a rear sight might be added? I think I couldn't want one without some sort of rear sight. I haven't look close at the kit, not enough to know if it is even viable.
I have seen someone here make a fowler rear sight out of one of those super (Neodymium) magnet that clamped over the top flat and down the angled flat a bit. It was neat and hard to knock off kilter.
Bob