Cody Wilson says he began selling the plans Tuesday morning and that he believes that selling them, instead of posting the plans for free, will not run afoul of the Seattle federal judge's Monday order.
"Anyone who wants to get these files is going to get them", Wilson said at the conference.
The injunction places the federal government's policy change on hold, preserving for now the previous status quo that made distributing CAD files for 3D printing guns a violation of worldwide munitions export rules.
The gun rights activist compared his new 3-D gun distribution model to Radiohead's "In Rainbows" album, which was released online in 2007, also under a pay-what-you-want pricing model: "I'm happy now to become the iTunes of downloadable guns if I can't become the Napster", Wilson said.
Washington state Attorney General Bob Ferguson, who is leading the legal case against Mr. Wilson, said it is up to the Trump administration to figure out what to do about Defense Distributed's direct-sales plans.
"For many years, I chose not to sell these files", he said.
Going further, the jurist, a former King County Prosecutor named to the bench in 1998 by President Clinton, questioned Wilson's motive for wanting to publish the files, saying, "The very objective for which the private defendants seek to release this technical data is to arm every citizen outside of the government's traditional control mechanisms of licenses, serial numbers, and registration". They were available for purchase at a suggested price of $10 each.
Wilson insisted that the digital files had already been available elsewhere online for years, and that barring him from distributing the content was akin to free speech censorship.
Wilson said buyers have paid anywhere from one-to-$15 for the plastic gun schematics, which have been placed on USB drives.
"Wilson is trying to push the boundaries over what the U.S. Constitution protects and the court will have to clarify whether the injunction goes far enough to cover flash drives", said Timothy Lytton, a law professor at Georgia State University who has written a book on gun litigation.
They also say undetectable guns wholly made of plastic are illegal in the United States. "I trust the federal government will hold Cody Wilson, a self-described 'crypto-anarchist, ' accountable to that law", Ferguson said.
Gun control proponents are concerned the weapons made from 3-D printers will be untraceable, undetectable "ghost" firearms that pose a threat to global security. "If they don't, President Trump will be responsible for anyone who is hurt or killed as a result of these weapons".
Mr Wilson said he could only sell to people in the U.S. online, but hard copies of the blueprints can be shipped to buyers overseas.
That judge, an Obama appointee, blocked a petition in late July from several gun control groups looking to halt the settlement in his courtroom.