Actually, the NRA really is against any manufacturer creating them, because a few states have passed laws saying (in a lot more words) "once smart guns are on the market, you can only buy smart guns." They view the creation of this technology the way some people on HN feel about porn-filtering technology: if it exists, a corrupt government will use it.

(I don't count myself in either of those camps but I listen to them enough to be able to explain their arguments.)