In case you didn't see any of the various media coverage, someone 3D-printed a metal gun. There is nothing you should be more worried about than that, except for literally everything else in the ...

Pressurized water guns have been popular since the 1980's. And while it's impossible to confirm, BackyardScientist might be the first to combine the idea with molten metal. It looks like half of its ...

A pint-sized gun that shoots a spray of molten metal is saving U.S. wartime industry hundreds of thousands of dollars and hours of labor. The Army & Navy have 750 of these hot-metal guns in use this ...

When Cody Wilson revealed the world's first fully 3-D printed gun last year, he showed that the "maker" movement has enabled anyone to create a working, lethal firearm with a click in the privacy of ...