"As the day has neared for the release of blueprints for printing 3D weapons, there has been a flurry of last-minute activity and expressions of concern from US lawmakers."

"Even the president weighed in with a Tuesday morning tweet that seemed to question his own administration: 'I am looking into 3-D Plastic Guns being sold to the public. Already spoke to NRA, doesn’t seem to make much sense!'... Officials are worried that these 'ghost guns' lack serial numbers, making them untraceable by law enforcement, and that plastic weapons may be impervious to metal detectors in airports. DIY firearms may also render existing gun regulations virtually moot. People who might normally be prevented from legally owning a gun, such as convicted felons or the mentally ill, could skirt such restrictions by printing them at home. At least in theory, that is. In practice, however, it’s not quite as easy as it sounds and 3D guns, some experts say, aren’t worth the trouble or risk of a weapon blowing up in your hand."

From The Guardian.

"Ghost guns." Who thought that up?