A single man is no threat to the state, so your example is wrong.
A militia could be.
To be able to form militia to resist the government, individuals have absolute right to be armed.
The mechanics is really pretty simple.
And yes, I believe that extends to all arms, as is written, otherwise the intent - to be able to form militia which can overpower the government - can not be fulfilled.
That is the constitution.
I am not saying I agree with it, but at the same time, without absolute right to bear arms, the government _will_ demilitarize the people.