I would not recommend SAF anymore. The reason is that their (effectively) lobbying wing, CCRKBA, had also endorsed Sessions, using even stronger wording than NRA.

http://www.prnewswire.com/news-releases/ccrkba-urges-members...

"Instead of promoting or defending schemes that impact law-abiding Americans, his track record shows that he will go after genuine criminals."

Note that the man who said this is Alan Gottlieb, who's also effectively the head of SAF.