3-D printed gun blueprints halted A U.S. court has blocked the release of downloadable blueprints to make 3-D printed guns that can go undetected by security screening Defense Distributed: Austin-based company founded by Cody Wilson (right). Trump administration granted permission to company to publish blueprints on August 1 States suing to stop release Washington Oregon Austin, Texas Connecticut, Maryland, Massachusetts, New Jersey, New York, Pennsylvania and District of Columbia LIBERATOR First working 3-D printed gun, single-shot pistol made mostly of thermoplastic components, with metal firing pin Liberator fires less powerful bullet than longer 9mm round Undetectable Firearms Act, 1988: Bans guns that do not contain enough metal to be detected by screening machines, but does not require that metal parts be non-removable Makers of 3-D printed guns can get around ban by creating metal inserts that are not essential for gun to function 3-D printed guns known as “ghost guns” because they are unregistered, untraceable and do not have serial numbers Plans, and printer, to build lower receiver of AR-15-style rifle also available Pictures: AP, Jay Janner/Austin American Statesman, via AP Source: Defense Distributed © GRAPHIC NEWS