Researchers at the U.S. Army Armament Research, Development and Engineering Center have test fired a 3D printed grenade launcher called RAMBO (Rapid Additively Manufactured Ballistics Ordnance). Donald Trump’s first budget as President of the U.S.A. will propose a huge hike in defense spending. If the President gets his way, an extra $54 billion will be pumped into the military, with foreign aid likely to be the biggest casualty. Arts funding will also be cut significantly, though there was a brief period when it appeared that might not be the case…