Well, Sirs, there's a raging debate til this day on whether the "bear arms" language applies to individuals (a personal right) or whether it is derived, by the structure of the sentence itself, among other reasons, from the first-mentioned necessity of militias. I come down, without further study, on the "personal right" side. Yet, and this is the main point, so far as I know, only the federal government (yes, after all these years) is restricted by the amendment, and so far (I think) states are not.