IMHO, I think the adoption of the Second Amendment has to be read in the context of a) no standing Federal army; b) Shay's Rebellion (1786); c) slave revolts such as the 1739 Stono Rebellion; and d) the 1772 Gaspee Affair together with 1775 Lexington and Concord. And all the surrounding myths then, later, and now.

Whether any of that history and myth should be controlling today is another matter.