This idea of the NRA governing the types of weapons available in gun shops is rank bull shit! Why is it that we're the only industrialized nation in the world which feels the necessity of a ordinary citizen to go armed with a military style killing machine?
The Bill of Rights is not a needs based document but it does lay out very clearly the "need" for an AR-15.
"Being necessary for the security of a free state".
Have you ever read the Bill of Rights?
The Second Amendment to the Constitutions establishes a need for firearms and it also says that the right to have them shall not be infringed.
The Supreme Court has determined that the right to keep and bear arms is an individual right protected by the Constitution so who give a shit if an idiot like you thinks I don't have a need for a firearm? You don't get a vote dufus.