Primary Outlet: Fox News RadioBroadcast Date: Tuesday, July 31, 2018 - 1:25pmBroadcast Type: interviewBroadcast Format: radioScholar: Blackman, JoshSubjects: 3-D printed gunsResearch Area: Law and Civil LibertiesLink: https://www.cato.org/multimedia/media-highlights-radio/josh-blackman-discusses-3…