“GUN CONTROL IS not dead,” says Cody Wilson. “Gun control is undead. We just keep killing it but it keeps coming back.” Wilson, a crypto-anarchist and serial troublemaker, launched the age of the digital gun in 2013 when he published files showing how to make the Liberator, a 3D-printed pistol. It set off a panic in the media and in anti-gun political circles.
By late 2014, his company, Defense Distributed, had raised enough capital to begin manufacturing the Ghost Gunner, a miniature computer numerical control (CNC) mill designed to take an “80 percent lower” for an AR-15 and turn it into a legal, untraceable, fully functioning metal firearm. (While the 3D-printing process is additive, creating objects out of soft material such as plastics, milling is subtractive, cutting away material from…