That looks like a nice sight.I bought a Deer Stalker .54 last year but I did not get a deer with it.
I tried to like the FO sights but my old eyes saw dots everywhere.
I wanted to get a dovetail cut in the barrel as I find the Marbles Bullseye sight to be good for my old and weak eyes but never got around to it.
I had a Lyman from another gun I had sold so I installed it. It works well but kind of klunky looking!
The Bullseye rear sight naturally centers the front bead much like an aperture sight but with improved target visibility. Young or inexperienced...www.midwayusa.com
It's not in the manual. We have IdahoLewis to thank for this. It works so well that i liked it as much as the set triggers on my current Renegade.I am going to read up on it. I got the original users guide .