Not gonna happen. Commercial and government resources are simply vastly more logistically available, at least until we are reduced to roving bands of spiky haired mutants roaming the shattered wastelands.
Exactly.
Not to mention:
Such confiscation would also be a highly risky business. I would assume that at least half of the neighbors around me are well armed, and that a lot of them would open fire in the event of a home invasion during a community crisis, whether the invaders claimed to be police/official or not.
Uninvited "guests" tend to get their @$$ shot off around these parts.....