Sorry, but the world doesn't work in a way in which you get to decide what weapons the government has 
But I assume you still want them to have some sophisticated bomb tech for wars, etc. right? If so, it is quite scary to me that you want civilians to be able to have that too. Newtown will be nothing if that happens- to me that is quite scary.
I know the founders intent with the 2nd amendment, but during their time there were no where near the sophistication and deadliness of the weapons we have today. It is a different ballgame. Without military/police personnel on the civilian side, I don't think a large scale revolt could work even if you had all the weapons they had (minus nukes). And if you have the military/police on the civilian side, you get the weapons with it
But again, I don't like that scenario. Again, times have changed a lot. The founders lived in the time where democracy was an infant and a much smaller portion of the world's people believed in its success. They were under greater threat of revolts, etc. We are at a stage where things are much more stable. We are also at a point in history where the usefulness of even pacifist movements has led to tremendous political change- even without escalation into war. I think there are better methods that starting a civil war even if we all decide to overthrow the government.