Unfortunately the vast majority of Americans are willing to allow the government to grow simply because they hold the belief that whatever SCOTUS says... is final.
The NRA's idea is for the fed.gov to act beyond it's enumerated power as found in that inconvenient rule book entitled, "The Constitution of the United States".
To most Americans, SCOTUS is the final arbiter of all things (even above the Creator). Most Americans are ignorant of Article VI, second paragraph that reads, "This Constitution, and the Laws of the United States which shall be made in Pursuance thereof; and all Treaties made, or which shall be made, under the Authority of the United States, shall be the supreme Law of the Land; and the Judges in every State shall be bound thereby, any Thing in the Constitution or Laws of any State to the Contrary notwithstanding."
The key words above are: "made in Pursuance thereof"... meaning that all laws made by Congress can only be made in accordance and support of those powers enumerated in Article 1, Section 8. Any law made beyond an enumerated power and made in pursuance thereof... are null and void.
Since most Americans are educated in government operated public schools, they have little or no idea of the Kentucky and Virginia Resolutions which addressed the unlawfulness of the Alien & Sedition Act. And though most of the other states did support the Alien and Sedition Act and discounted nullification, ironically less than ten years later they used nullification to push back against the Embargo Act of 1807, claiming it to be null and void. Wisconsin nullified the Fugitive Slave Act later, claiming it to be unconstitutional. The RealID Act has effectively been nullified. Many states are nullifying the NDAA, Obamacare and a host of other unconstitutional laws.
On nullification, Thomas Jefferson wrote: "A nullification is the rightful remedy whenever the government violates the Constitution."
In Federalist #78 states: "No legislative act, therefore, contrary to the constitution, can be valid..."
James Madison says in the Virginia Resolution: "The states, then, being the parties to the constitutional compact, and in their sovereign capacity, it follows of necessity, that there can be no tribunal above their authority, to decide in the last resort, whether the compact made by them be violated; and, consequently, that, as the parties to it, they must themselves decide, in the last resort, such questions as may be of sufficient magnitude to require their interposition."
The violation occurs when the .gov oversteps it's enumerated powers. Gun control is a complete violation of those enumerated powers. Neither the Commerce Clause or the Necessary and Proper clause (and all of it's 'elasticity') give such broad powers to the fed.gov and only pertain to laws passed in accordance with enumerated powers. Naturally defendants of the CC & NP are unwilling to discuss the Ratifying Debates of the several states to ascertain the actual meaning and intent of both and instead rely on the ignorance of the people to stretch things to it's benefit and growth.
Much of all the problems in the US boils down to an ignorant populace and people with good intentions who have zero concept of natural rights. Sadly, 99% of gun owners are ignorant of natural law, the rights granted by virtue of our humanity and are incapable of philosophical thought. Most gun owners also have no understanding of what the legitimate purpose of government (in and of itself an unnecessary concept) might be. If it has a purpose, that purpose is to defend the right to life, liberty and property.
The NRA and those who support it may have good intentions. But their answer simply defies the enumerated power of Article 1, Section 8. Essentially, because the NRA is ignorant of how their solution violates the Constitution, they are as much an enemy of the Constitution as the anti-gun crowd. They can correct their anti-constitutional stance by advocating that the states address the issue and tell the fed.gov to pound sand.