I looked at one once. I was thinking about getting it re-chambered to the 45-90 but went a different route on a different caliber. Don't know about the tang sight. I'm trying to remember how the grip was but it has been a long time since I held one but I think the opening button may make it hard. Might be able to mount something on the receiver but you may end up with a problem with the height of the front sight.