I'm sure when our forefathers granted the right to bear arms, they were assuring us the right to defend ourselves. Whether it be political tyranny, a burglar or a mad dog, we could have weapons on our property.
That old sword your father gave you from the French and Indian War, fine. The rifle you use to hunt with, fine. The two rifles you use in tandem in case of attack when your wife or oldest child load while you fire, enabling you to pull off three shots a minute instead of two, as long as the powder is dry, fine. The clubs, pitchforks, scythes and slings, all legit.
However, if one day a kid shows up in town with a short, light, black stick and kills 20 to 30 people in less than 15 seconds, that's different. The stick would have been burned and buried, and the child possibly tried as a demon. We have to keep a historical perspective.