It’s not a coincidence that both Australia and the UK enacted confiscatory gun control a few years ago.
For whatever it is worth, rights listed in the Magna Carta, or the English Bill of Rights are basically only a vote away in Parliament from being altered or abolished. Now it might be a contentious vote that may take some time to pass, but rights we in the U.S. inherited from the UK/England are not as ‘set in stone’ there as they are here.