My interpretation is that they intended for us to keep weapons of any and all varieties, and the right to bear those weapons means we are allowed to carry them with us, and use them if necessary. at least it should.
Google Tench Coxe, and click the hit that takes you to his page on Wikiquotes.
Something about "all the terrible implements of the soldier ..."
You'll find it. I keep posting it, then I forget which threads I cited it in. (Age does that to you.)