This line of reasoning has to explain how we can regulate things like:

- Javelin missile launchers

- aerosolized bioagents

- jet fighters

- land mines

but not sniper rifles.

Again, if you're going to extrapolate what "arms" meant in the late 18th century, you have some choices:

- personal arms of the day (muskets, cannons, bayonets)

- personal arms of the current day (missile launchers [0])

- weirdo arms of the current day (drones, gases and bioagents, dirty bombs, white phosphorous)

Originalism isn't helpful to us here, it turns out.

[0]: https://www.militaryfactory.com/smallarms/rocket-launchers.p...