"One of them was a MAC Tec-9 or -10", he said. "And not just any firearms, untraceable firearm", Menendez said.
Guns that are capable of going undetected, they are untraceable, and defeating metal detectors.
Gun-control advocates said the files would enable individuals to avoid background checks by using 3-D printers to make guns at home.
"You can make it illegal to possess 'em and that'll discourage a lot of people", Kelly said. He said 3D printing is more accessible than ever because of software improvements and some slight reductions in the cost of 3D scanners and fabrication tools. "Already spoke to NRA, doesn't seem to make much sense!".
The U.S. State Department sent a cease-and-desist letter and accused Wilson of potentially breaching International Traffic in Arms Regulations.
Democratic senators said at a news conference that Trump has the power to stop the company from making downloadable plans available online. The federal government alleged that violated federal law.
"I've had people ask me if I can make something like that for them", she said. The plans govern the printing of the component parts, which would then need to be assembled. That doesn't stop the posting of plans on how to build them from being all over the internet.
"Feldman presented his position in a Bloomberg Opinion piece in which he weighed whether speech can be banned simply because it is in an instructional format that can be used to "[tell] people how to commit crimes".
A 3D-printable handgun designed by Defense Distributed. The State Department had included the design files on a list of munitions subject to export controls, barring their distribution.
The White House suggested Wednesday that Mr. Trump was blindsided by that decision.
"It is immediately obvious to anyone who looks at this issue that 3D-printed guns are nothing short of a menace to society, and we are thrilled that the court ruled in this manner", stated Avery Gardiner, co-president of the Brady Campaign.
Sanders said the president was "glad this effort was delayed" so he can review the material.
Still, it's not clear what the government can do at this point.
The arguments began in 2013 when self-styled crypto-anarchist Cody Wilson showed off the world's first 3D-printed gun. It was blocked by Sen.
At the hearing, Defense Distributed agreed to block Pennsylvania IP addresses for a few days until a more formal hearing could be held. "It's certainly a huge worldwide problem, particularly given that many other countries have much stronger gun laws than in America", Lowy said.