The NRA has no reason to "spring into action", other than to focus its members and sympathizers on the imagined need to go out and buy yet another gun to add to the dozen they already own, because, you know, it might possibly become illegal to buy such guns. The NRA is not nearly so much a defender of the 2nd Amendment as it is a promoter of of the gun industry.
You can judge the amount of profit in an industry by the number of magazines dedicated to the purchase and use of specific high-profit items.
How much can anyone say about cigars? Yet we have "cigar aficionado" magazine. There is as much of, or more variety of pipe tobacco sold as cigars, but pipe tobacco isnot so high profit. Hence, no magazine. There is no magazine for those who roll their one cigarettes, but there are at least half a dozen dedicated to Black women's hairdos.
I see there is an Open Carry magazine now trying to sell itself as well.
Men's magazines featuring clothes are also a riot: $90 neckties, $200 jeans, $1000 shoes, I have even seen a recommendation for white t-shirts selling for $29.95.