originalism
    the principle or belief that the original intent of an author should be adhered to in later interpretations of a work.
        Law US
        the judicial interpretation of the constitution that aims to follow closely the original intentions of those who drafted it.
Second Amendment: 1789. A well regulated militia, being necessary to the security of a free state, the right of the people to keep and bear arms, shall not be infringed.

The constitution only entitles people to keep and bear arms [no mention of ammunition] as the arms were as 1789. It makes no mention of where the arms are to be kept or how the arms are to be born. I have no objection to 1789 style arms being kept at the militia's arsenal and borne during militia drills. That would be the "well regulated milita" not an unregulated bunch of individuals. That's all the constitution speaks to keeping and bearing arms as part of a milita. Cheers.