Oh they will ... they'll fail but they will. What will happen is that some Islamists will pull a Paris here in the US with ARs and AKs they bought from gun shops with NICS checks and the whole bit and the MDA folk will claim that's why they need to be banned.
That's going to happen for sure. It might even be part of the plan.
Te occidere possunt sed te edere non possunt nefas est