There are only four million NRA members and maybe another million in the other gun groups.
If 75 million gun owners won’t join the NRA even when a first year membership is free, you’re fooling yourself if you think those gunowners will ever rise up to fight tyranny.
Keep in mind there is considerable (justified) paranoia out there. The aware American KNOWS that BOs minions are watching anyone joining such groups.
If those gunowners rise up to support tyranny then they will be on the receiving end of long distance .243 hollowpoints (or 30-06, or .308 or .223 or 7mm or 7.62 x whatever).
Maybe some don’t want to be on yet another list (especially when Maobama someday directs Holder to declare the NRA a terrorist organization).
Maybe some are tired of receiving appeal after appeal for money to stave off some hyped-up disaster - only to have the NRA later compromise away yet another freedom in some legislative battle.
I belonged to the NRA for 18 years, and may do so again. But the NRA is not the end all and be all of pro-gun activism or of love for liberty.