The federal government has sent a letter to a personal defense advocate demanding he remove the 3D blueprints for a functional homemade gun from his website. Cody Wilson of Defense Distributed, which hosts designs for 3D-printable firearms and firearm components, has complied with the government order to remove the files. “DEFCAD files are being removed from public access at the request of the US Department of Defense Trade Controls,” reads the banner at the top of his website defcad.org. “Until further notice, the United States government claims control of the information.” Defense Distributed's Twitter account lays blame on Secretary of...