I'm not sure what exact set up the rifle you want has but mine is a slip on ring(for lack of better description) that matches the barrel exactly. In my case I'm sure a hammer and hardwood block would take it off.
It might be soldered on.....
This is just a guess as I don't have one (yet...!) but it is possible that there is a cross pin and a longitudinal "key" that fits in a slot in the barrel and sight ring, same as the SMLE Mk III. I wouldn't go whacking away with a hammer and block until you check!




























I wasn't telling him to do it, just how it looks like I would have to do it. Consider me schooled.





















