Not technically, I suppose, but the NRA has consistently supported policies that make it easy for criminals, the insane, and yes, terrorists to get the weapons that they use. They have given the US by far the highest murder rate of any developed country, and enabled and abetted most of domestic terrorist acts by consistently opposing measures to keep weapons out of the hands of the most dangerous people in the country.
It's time to say no.
The second amendment reads: "A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed."
If that's the point of the second amendment, then require all gun owners to belong to the militia, and regulate it well - weekly drills and regular deployments would be a good idea. That means no crazies or criminals. Strict discipline would insure that unsuitable militia members be expelled and deprived of their weapons.