This regulation hinges on the definition of a "single function of the trigger." In the next Administration, the fate of semiautomatics, and in particular of the AR-15, will rest on the definition of "readily convertible" to fully automatic. The exact technical issues may be different, but the overarching principle that is being established here is that a long-standing policy can be reversed on a whim. They're going to say that any AR-15 can be converted to fully automatic in a few minutes (or hours, it doesn't matter) in a machine shop. Under the 1968 amendments to the 1934 NFA, that would make it a machine gun, regardless of whether it can currently shoot automatically.. If it wasn't registered as such with the ATF by May 19, 1986, then it would be contraband and there would be no provision that would allow grandfathering or compensation. If this regulation is allowed to stand, that's the situation that we will be facing in a few years. Folks, this is not about bump stocks. I don't care anything about bump stocks, but I do care about keeping my AR-15's and other semiautomatics.