Would you say that the same could apply to the Constitution? For example, some claim that the founding fathers could not possibly have imagined some of the advanced military-grade arms made today, and therefore, the average citizen should not posses them. Do you agree with this?
Well, of course - even the U.S. Constitution is not the Living Word of God. As for your specific example, I believe the 2nd Amendment covers ALL personal firearms, military-grade or not.