Please provide proof. I'm not aware of any such regulations, and I've read a LOT in this area. Even as late as the civil war, it wasn't unusual for (say) a plantation owner to buy the cannon for his local militia--but HE owned the cannon.
"And yes; those private sailing ships were well-armed and a logical argument probably can be made that this is evidence of unrestricted access to arms. But I would respond that that goes a bit far.
And you would be wrong. History says otherwise. Unfortunately for your position, between the Revolutionary War and up until the civil war, if you could afford to buy it, you could own it.
"The 2nd Amendment says "well-regulated." That must have had some meaning to the framers, otherwise they would not have put it in."
It did---it meant "well-trained". See "regulated" as in "regulation of a clock's movement". The bane of Washington's existence was the poor training of his militia elements. It wasn't until von Steuben showed up that they were "trained up" to an acceptable standard.
What the Founding Fathers were trying to accomplish is easy to ascertain from history---the only folks who would have you think otherwise are those that want to ban firearms.