We don't try to regulate those things out of existence like we do with new technology (drones and now 3D printers)
Kind of ridiculous that a country with more guns than people and 45k firearms deaths per year wants to regulate 3D printed plastic. Yet collecting and shooting actual guns is still an acceptable hobby in many states.
I'm completely against regulation of any sorts on 3D printing, but you have to admit there is a huge difference in purpose there.
Hiya! (Grenade)
There's clearly a need for more cheap interceptor drones as well, but it's not like the US military won't start deploying those soon enough.