When I decide to exercise my brain I play Sudoku. When Youtube user Derwood exercises his brain he legally creates a semi-automatic gun that 95 per cent 3D printed and completely untraceable. Read more >>
Jiggle, jiggle, jiggle, as a fully automatic glock starts shooting its bullets at a ballistic gel dummy. It’s almost funny how the gel moves! But then you look a little closer and see the true damage of the gun and it’s a whole lot scarier. Click through for the full clip.