Ah, I've always just referred to these as the 4 rules of gun safety, and I just combine 3 and 4 into one single thing as a lot of handguns these days don't have a manual safety anymore like you mentioned. I like your way of phrasing it as common sense gun control better though, lol.

This reminds me I need to actually clean out my old safe, I don't have many guns in there anymore but it's probably beyond fucking dusty/dirty in there since I haven't wiped it down in like 2 years almost. Ugh.