They are the number one Second Amendment Rights group and do offer some specific benefits. They along with their Legislative Action Group the NRA-ILA do a lot to protect our freedoms, but also work to promote shooting education and safety.
Review these links for more detail:
A major source of objection to a free economy is precisely that it ... gives people what they want instead of what a particular group thinks they ought to want. Underlying most arguments against the free market is a lack of belief in freedom itself.
- Milton Friedman