Yes I know that many regulations are done on the state level and then there's gun free areas and so on, but I'd still say that this is something very unique about the US.

I can't name even a single example where societies, even if it is only at a state level, generally allow citizens to carry a gun in public (without having to acquire some special permission that only very few people have access to)

If there is some other society that allows this then it's probably an Anglophone country.