I just think this is whataboutism to be honest, do you really need a gun? Would you not be willing to give up gun ownership if it potentially would stop people like the guy in Nova Scotia having easier access to guns? I always thought guns were really interesting from a technical perspective growing up, had loads of pellet guns etc., but I would never, ever want to own an actual gun, and I would never want it to be easy to own a gun in my country, just because of the slim chance that things like a random mass shooting might be easier to carry out because of it.
Maybe I just don't understand your perspective because I live in a country that doesn't have any real form of gun culture, but they just seem like completely superfluous items to me, that nobody should see grounds to complain about not being able to own.