Finally found a nice BSA MKIII anyone know of scope rings for this model? Has the Parker Hale peeps, but not sure my old eyes are up to what the rifle is.

You are looking at barrel mounted scope bases for that gun.

Are there any holes drilled and tapped or bases mounted on it already?

There are three scope blocks mounted already. Would prefer a more modern scope, but the vintage long tubes are around. More research needed..