Well that section isn't from the Federal constitution; and it's circumstances were the colonial military being controlled by the Kingdom of Great Britain, and p

Well that section isn't from the Federal constitution; and it's circumstances were the colonial military being controlled by the Kingdom of Great Britain, and practically everything else (except trade and taxation) being controlled locally, namely the operation of courts for civil transactions. The dislike for a standing army was always more of a warning and a distaste among the founders than any actual legal or constitutional prohibition. Via the constitution, militias are desired (expected?) to be well-regulated, meaning you probably don't get to be a "militia" (in the any legal sense) just because you declare it. But the right to bear arms is really independent of that; and comes from fear of military occupation (foreign or domestic) as much as by anything else.