Ron is correct... You don't amend amendments... You repeal them as was done in the 21st amendment which repealed the 18th (prohibition) if my memory serves me...

But there is another avenue here... The Supreme Court, from time to time, re-interprets amendments and the 2nd amendment is ripe for a major re-interpretation... The current court isn't up to the task but there is a real possibility that within the next four years that one of the conservative judges will be replaced with a forward thinking justice and that could open the door wide open to not only gun-control but a host of other issues, "Citizens United" among them...

B~