Poll tax on second amendment. No dice. Furthermore, the solution to everything you don't like is not taxes. I can make gunpowder with bird crap and drywall. I can make guns with a couple aluminum ingots and machine tools.

Felon's can't have guns already, and the quickest way to felon status is looking at someone cross-eyed with a firearm, and furthermore, if you're going off the handle and using it, I'm pretty sure your next visit to the ballot box is the last thing you're worried about.