No, it's like pushing for horse-drawn carriage control because people in cars are speeding, or like saying there's a butter-knife loophole around sword bans.
It's fucking important to know about the things you're trying to legislate, and knowing that an AR-15 isn't an assault rifle is such a basic bit of information.
AR-15 is not selective fire. That means fully automatic, something that is already effectively banned in the USA.