I would say the main thing to point out (as I did) is that; if existing laws/rules had been complied with the rifle would not have been accessible to children & Ben Wragge would still be alive.
While if simple common sense & human decency were applied no one would be shooting air guns at other people, especially children/babies, whether they think them empty or not!

It's not more laws that are required, it's training & education over airgun/firearm safety.