Ok, how?
I am going to play Devil's Advocate as I am frustrated with calls for action that are devoid of strategy and tactics. An election cycle is coming where folks not committed to the RKBA will see the danger of MSRs, EBRs, MSSAs, assault weapons, assault rifles, - anything you want to call them. They fundamentally want to be safe at the mall, place of worship, school, etc. They are not really interested in Socialism, they don't want to control you (common cliches).
So the gun bans have appeal. Make the case why a 19 year old should have the ability to purchase a basically short barrel rifle and equip it with a 100 round magazine?
The ball is in your court for how we go on the offensive to win legally. Choir arguments and cliches are not useful to a person fearing for their safety.