Building a gun out 3D-printed parts is so 2013. Now, the United States Army has managed to 3D-print an entire grenade launcher, and it looks roughly like an assault rifle in the popular video game ...

If the rest of this sci-fi arsenal follows, war may soon be unrecognizable. Read on for a look at some of these futuristic weapons being tested today. The XM-25 grenade launcher is equipped with a ...

If I had to guess what science-fiction weapon of war would ... This is a shockingly compact setup for a semi-automatic grenade launcher. (Photo by Barrett Firearms) In October, gunmaker Barrett ...