Big gov should fear the people more for 3D printed IEDs, not guns that require a human sponsor to operate. IEDs don't even need explosives. A flying plastic bayonet that seeks out 98.6 degrees Fahrenheit could ruin a central planning bureaucrat's whole day.
Nice to see someone who has been paying attention and has imagination.
As someone who has had a career in RDT&E, that is an interesting concept, but lots of testing is necessary to insure that it works with any degree of reliability. Murphy’s law is real.