[20180807]IN10953_枪械控制：3D打印枪械.pdf

CRS INSIGHT Prepared for Members and Committees of Congress INSIGHTINSIGHTi i Gun Control: 3D-Printed Firearms -name redated- Specialist in Domestic Security and Crime Policy August 7, 2018 In May 2013, Defense Distributed, a federally licensed firearms manufacturer, posted on its website computer assisted design (CAD) files for three dimensional-printing (3D-printing) of a single-shot, smoothbore, .380 caliber pistol that could be made almost entirely with non-metallic material. The design of this firearm, the “Liberator,” does not appear to violate the Undetectable Firearms Act of 1988 (18 U.S.C. 922(p), because it includes the requisite amount of steel. This statute prohibits the manufacture, importation, transfer, or possession of any firearm that is not detectable to “walk-through metal detectors” calibrated to detect a security exemplar that resembles a handgun with the same electromagnetic signature as 3.7 ounces of stainless steel; or includes major components (barrels, slides, cylinders, frames, or receivers) that generate an inaccurate image when inspected with “x-ray machines commonly used at airports.” The Liberators design arguably illustrates a possible shortcoming in