AdvertisementJudge Issues Temporary Restraining Order Blocking 3D-Printer GunsJuly 31, 2018Vanessa RomofacebookEmailSens. Edward Markey, D-Mass., left, and Richard Blumenthal, D-Ct., display a photo of a plastic gun Tuesday, as they call for President Trump to reverse an administration decision to allow a Texas company to make blueprints for a 3D-printed gun available online. Trump announced over Twitter that he is "looking into" the sale of 3D plastic guns to the public. (AP)