A "ghost gun" is a political buzzword for "gun not manufactured by someone the local government has leverage over". Most firearms manufacturers that manufactur

A "ghost gun" is a political buzzword for "gun not manufactured by someone the local government has leverage over". Most firearms manufacturers that manufacture and sell firearms for resale are bound by federal guidelines to do things like serialize them to comply with regulations that make it easier for law enforcement to trace the paper trail or ownership of a firearm. They must also have enough metal in them by law to set off a metal detector. None of these measures cover firearms privately made, not for resale. those are not regulated. therefore it creates an extra "spooky" mystique the media likes to play up, and xertain groups wring their hands over. The fact 3d printing has made firearm manufacture that much more accessible to the everyone of course has certain political factions wanting to figure out ways to keep those pesky weapons out of people's hands.