I think the best public strategy going forward is to not talk about the AWB, but on the mag ban, which effectively makes thousands of handgun owners into criminals overnight. Point out that the law is a lie, it isn't going after the guns used at Parkland, it is going after the guns in your house, that you have had for years. It is going after the guns that people carry everyday for self defense. An the real kicker is that by doing nothing, you can become a criminal overnight and be subject to fines and prison time.
Is the possession thing new? You couldn't buy a rifle under 18 and a handgun under 21, but someone could gift you one?
Basically, everyone that has a semi-auto handgun is put in legal jeopardy by this law. It isn't a AWB or a bumpstock ban- it is handgun confiscation. That is the effect.