http://www.dailymail.co.uk/sciencetech/article-2238605/U-S-start-plans-share-3D-printable-firearms-FREE-Internet.html
Coming soon, the gun you can download: U.S. start-up plans to share 3D printable firearms for FREE over the Internet.
Anyone in the world could soon have access to a 3D printable gun through the internet thanks to a U.S. start-up which plans to distribute schematics for the weapons free of charge.
Defense Distributed, a company which wants to extend the U.S. Second Amendment rights to the entire world, hopes to test prototypes of the printable weapons by the end of the year.
‘This project could very well change the way we think about gun control and consumption,’ the organisation says on their website.
lower-end receiver part for an AR-15 submachine gun
Uh, what?
Do they not even know how new this “technology” is and how inconceivable it is? (As of yet)? I would never trust a 3D Printer firearm. Ever. Ever.
Never say … ever? 
This 3D-printing technology is in its nascent phase. I suspect it will advance quite rapidly and may have a dramatic impact on manufacturing processes involving all manner of products.
I forget the name of the movie, but Clint Eastwood was a Secret Service agent, and John Malkovich was an assassin who made a gun out of hi-tech materials he cast himself.
3D printing of guns is at the same stage as cartridge ammunition when it was first introduced.