There are negative rights and positive rights. We all could learn a little more about them. See 2.1.8 @ http://plato.stanford.edu/entries/rights/#2.1
To the extent that libertarians believe that taxes are extracted by force (I usually see this written as "violence") then yes. If each gun carried a tax sufficient to mitigate it's societal cost, and if each cartridge were an order of magnitude more expensive, we would be done with this issue in 100 years.
It will take a long time, but it won't get done if we don't start.
(Preventively - yes, you can 3D print yourself a handgun, and likely blow your hand off, and reload your own bullets. At that point your personal time doing that work is a proxy for the taxes you would have payed.)
But it looks just as feasible from an ideological point of view as ending white supremacism in the US.
From a more practical perspective, what are you going to do about it? Are you proposing to take arms from the American people by force? How many deaths are acceptable to make that happen?
To be clear, I don't mean the above as a threat or anything of the sort. I'm merely pointing out the certain result of a policy of disarmament, and the hypocrisy of using force to render a population defenseless.