Nearly everything you're hearing about 3D printed guns right now is false.
Gun blue prints are and have long been readily available on the internet. A simple Google search shows this. The thing every politician, activist, and media personality warns will end the world tomorrow has literally been happening everyday since these blueprints were created.
It has also been perfectly legal for law-abiding Americans to download and print or mill these designs the whole time as well. It has also remained illegal for prohibited persons to build firearms with 3D printers or by any other means as well.
The vast majority of 3D printed gun designs are not undetectable to metal detectors. The majority are mostly made of metal because most of their parts have to be sourced from actual firearms manufacturers. Under federal law it would be illegal to build a gun that's undetectable.
The case everybody is talking about centers around the State Department's claim that posting gun designs on the internet constituted exporting firearms to foreign entities in violation of ITAR. freebeacon.com/issues/state-d…
The State Department only ever made this claim against Cody Wilson, the most famous person associated with 3D printed guns, and his group Defense Distributed. They don't appear to have taken action against all the other Americans posting gun designs online.
Nor was there ever any claim that law-abiding Americans who downloaded and used the designs were in violation of any law. Furthermore, Americans have legally built their own firearms for personal use since the country was founded. This isn't new.
Anyway, I've got a comment request in to the NRA about the President's confusing tweet and I'll be interviewing Cody Wilson again later today. 
Ah. Another successful Twitter thread in the books!
