The men who wrote the 2nd amendment did foresee the advances weapon technology might take in the future. The civilians who fought in the Revolutionary war were using, for the most part, their own weaponry, which was similar, and in some cases superior to the weaponry used by the British. [b]A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.[/b] The [b]'militia'[/b] in that era, and in some respects the present, refers to all citizens whom are able to defend the country if need be.[b] 'Being necessary to the security of a free state' [/b] explicitly states just that; the ability for civilians to defend themselves and the country against threats. The colonists just fought a war against a tyrant government, so they knew a bit about such things. To avert such another oppressive government, through the constitution they gave citizens the power to do something about it should it , God forbid, get to such a point again. [b], the right of the people to keep and bear arms shall not be infringed.[/b] See video for TL;DR version. [url=http://www.youtube.com/watch?v=0XrNzE39J8E]Relevant[/url]