The Liberator, the world's first 3D-printed guns has had its plans of construction removed from the Internet. The Department of Defense (DoD) had the plans removed from Defense Distributed.
Defense Distributed, founded by Cody Wilson, had plans for The Liberator on his website, allowing anyone to access the plans and if they owned a 3D printer, to make the firearm from plastic. Over 100,000 copies of the plans were downloaded before the DoD slammed the ban hammer down. A banner on the website says:
[Defense Distributed's] files are being removed from public access at the request of the U.S. Department of Defense Trade Controls. Until further notice, the United States government claims control of the information.