ghost gun

Derived from the fact that these firearms are un-serialized, difficult to trace, and often remain invisible to the tracking and regulation covering traditionally manufactured firearms. Known as “kit gun” or a “DIY gun.” Coined in 2012.[1]

ghost gun (plural ghost guns)

1. A gun without serial numbers that cannot be easily tracked, especially a home-made gun built with non-registered, partially finished or 3D printed components.
   • 2017 November 27, Christina Caron, quoting Adam Skaggs, “‘Ghost Guns,’ Homemade and Untraceable, Face Growing Scrutiny”, in The New York Times‎, ISSN 0362-4331:

     The two companies warrant attention because their marketing focuses “on the anonymous, untraceable nature of the guns they allow to be made — and the many examples of ghost guns used in crimes,” Adam Skaggs, chief counsel at the center, said in an email.

   • 2018 July 30, Tiffany Hsu; Alan Feuer, “A Rush to Block Downloadable Plans for 3-D Printed Guns”, in The New York Times‎, ISSN 0362-4331:

     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.

   • 2019 March 18, Nick Corasaniti, “The Target Was a Drug Ring. They Found ‘Ghost Guns.’”, in The New York Times‎, ISSN 0362-4331:

     The suspects in New Jersey are accused of trying to sell several homemade AR-15 assault-style rifles that are known as ghost guns because they cannot be tracked.

2. A gun that is not detectable by standard gun detection measures, such as a gun without much metal thus unable to set off metal detectors.