ghost gun noun2 •A gun without serial numbers that cannot be easily tracked, especially a homemade gun built with nonregistered, partially finished, or 3D printed components.In New York, state lawmakers announced legislation on Monday that would require makers of ghost guns to have a gunsmith license and register the firearms. — 2018 •A gun that is not detectable by standard gun detection measures, such as a gun without much metal and thus unable to set off metal detectors. formsghost guns
