I think we "gunnies" should look for other groups, associations, etc that have an outlook similar to ours to help "muscle up" our numbers.
I don't mean to imply that the NRA, SAF and more locally-focused groups are ineffectual, simply that there is always strength in numbers.
I listen occasionally to general aviation podcasts in my car (there isn't enough gun stuff to fill up a week's worth of driving). It seems as if people in the GA community have some overlapping interests - they seek freedom (what could be more free than having your own plane?) of time, place and action. And they are beset by a slew of regulations - some sensible, many not. And their community is constantly in danger of infringement by politicians and bureaucrats who have no clue as to what the real impact their regulations will have.
A lot of GA pilots are also racking up flying hours to qualify for commercial passenger airlines. As far as I know, pilots still have the option to get the training to arm themselves in the cockpit. Why not take a pilot shooting so they can get a sense of the administrative and shooting skills that they will need to acquire? Once they see how much fun it is, and once it's explained to them how hard we've fought to keep our Second Amendment rights, they are more likely to add themselves to our ranks.