If there isn't any letter prefix to the serial number, then your 1895ss was produced in 1998.
If it were microgrooved, it would be stamped on the barrel. If it isn't, then it is Ballard rifling. Ballard rifling is easy to spot by using a bore light and looking down the barrel.
I have a tang sight on my cowboy rifle, but they are easily damaged. Your 1895ss is a modern rifle. As being so, if it were mine, I'd go with a good receiver sight.....or even XS ghost ring sights would be good. Once you drill and tap the tang, it's there forever!
hog