What guns do you have a right to own

What weapons should be banned? I don't have a problem with banning dangerous weapons. If a gun is so cheaply made it would blow up in your hand with factory ammo, it shouldn't be sold. Beyond that, per the constitution, I believe that if you want it, and can afford it, you should have the right to buy it. What! Privately owned nuclear bombs? Buddy, they aint cheap. I strongly favor limiting the right to sell any weapon abroad, but if a person is a lawbiding citizen, what is the problem with them having something? (maybe a nuke would be extreme) I do believe people should have the right to own things like fighter jets, artillery, tanks, and even warships. The Constitution did not provide for a standing army. Section 8 of the Constitution reads:
To raise and support armies, but no appropriation of money to that use shall be for a longer term than two years;
To provide and maintain a navy;
To make rules for the government and regulation of the land and naval forces;
To provide for calling forth the militia to execute the laws of the union, suppress insurrections and repel invasions;
To me thats pretty simple, a two year limit on appropriations for the Army, authority to call up the militia to execute the laws of the union. So clearly, the Army is supposed to be temporary, and the militia is supposed to be used to enforce national law when needed. So instead of SWAT teams and large Police forces, its the job of the citizens to enforce the laws, not the police, not a standing army, or the standing army of occupation that ObamAA- has created under the DHS mantle.
We are supposed to be a nation of armed citizens prepared to repell any threat, not a police state. Isn't it time we demanded our country back?