The above footage is of the world's first 3 dimensional printed gun. Reports the Guardian:

The world's first gun made almost entirely by a 3D plastic printer has been successfully fired in Texas.

The successful test of the plastic handgun, which was built by Defense Distributed using an $8,000 3D printer, came after a year of development. The company, which is run by 25-year-old Cody Wilson, now plans to publish the blueprints for the gun online.

Most worryingly, this is 100% legal:

The Undetectable Firearms Act of 1988 makes it illegal to manufacture in the US any firearm that is not detectable by walk-through metal detectors. To combat this, Wilson inserted a 6oz piece of steel into the body of his gun, making it legal.

So in a country where there are already 32,000 gun related deaths a year and roughly 300,000 privately owned firearms, the technology is now available to create deadly weapons on demand.

Not to point out the obvious, but isn't this a bit troubling?