WIRED’s Senior Writer, Andy Greenberg, has been reporting on ghost guns for years. He first used a 3D printer to assemble a gun more than a decade ago, and says that today’s process is not only faster, but cheaper. We talk to Andy about how he legally printed the same gun Luigi Mangione allegedly used in the alleged killing of the United Healthcare CEO last year, and whether US law is keeping up with the technology of 3D printed guns.

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