Do you think our forefathers had current guns in mind when writing the 2nd Amendment?
I think that they had just overthrown an oppressive government and were well aware that it could NOT have been done by unarmed citizens. I think they also knew that the definition of "well armed" would evolve and that citizens should be allowed to keep pace with that evolution.
If you think about it, firearms evolved tremendously from the writing of the 2nd amendment through the end of the civil war. Yet, I know of no mention or proposal of "gun control - disarming the citizens" following the civil war.