Gun safety advocates warn of a surge in untraceable 3D-printed weapons in the US

As police departments around the country report a surge in 3D-printed firearms turning up at crime scenes, gun safety advocates and law enforcement officials are warning that a new generation of untraceable weapons could soon eclipse the “ghost guns” that have already flooded U.S. streets. At a summit in New York City on Thursday, the advocacy group Everytown for Gun Safety will bring together policymakers, academics, 3D-printing industry leaders and law enforcement officials to confront the growing challenge. Numbers collected by Everytown from about two dozen police departments show how quickly the problem is growing: A little over 30 3D-printed guns were recovered in 2020.