I don't find worst case there to be self explanatory. People put general "self explanatory" in there, cause they dont want to say what they intend to do with those guns.
I don't recall armed individuals with whatever they stocked for themselves to make difference when real issues happen.
What made difference were organized trained ideological groups with those arms. So, in that case, I am really interested to know which ideological group are those people stocking for - and against who they intend to use those guns.
That is why it dont make sense to stock some ammo in abstract and why the expression is slimmy.