If your fine with the buck Horn site then by all means use it .
Why fix something that is not broke?
The reciever site allows us older eyes to focus on the front site alone and the game in question, instead of trying to line up two sites and the target.
So our eyes automaticly centre's the front site in the rear and all we need to do is place the bead on the target were we want the bullet to hit and fire . Another method is just to place the front post on target and the bullet set to hit just on top of the post.
Your rifle should be drilled on the side of the reciever to accept the willaims side mounted model. You would also be required to replace the front site , I think, to the medium height front site.
Best to order both at the same time for your rifle.
Now you can also go one step further and get the ghost ring set up which is basicly the same set up as a peep but much larger . Folks will use this set up alone or with a forward mounted pistol scope.
You would then be able to use the scope with both eyes open for that snap shot , or quicky tip off the scope in bad weather and just use the ghost ring site.
Winchester has the timber scout model 94 set up this way in 30/30 and 44 Mag.
I was thinking of going to this route, since I now use peeps, have less then perfect vision , and am having problems finding running fgame in a low powered scope. Shooting with both eyes open ther would be less chance losing sight of the target.
"But"
If your eyes are fine and you can hit what you want with the factory sites, why changeto something to will need to adjust to?