Surely the Second Amendment outweighs any rulings by the FAA? Where in "keep and bear arms" does it say anything about them not being attached to an aircraft? The Constitution doesn't even mention them. A bullet is a flying weapon. So is a drone.
Bonfire of regulations. Now. You know it makes sense. And raise a militia or two to persuade the Greenlanderese that their future lies in being a cold Puerto Rico. Because MAGA, and nothing says MAGA like unrestricted access to flying weapons. And icebergs.
Now just compress that into 280 characters and we're good to go.