The gun modification that made the Las Vegas shooting so deadly Bump stocks make semi-automatic guns behave like fully automatics. Facebook Prev Article Next Article Discover Checkout these cool gadgets... Related Posts Why incompetent people think they’re amazing Meet CERN’s New Particle: A Double-Charm Baryon! 4 Possibilities for the Meaning of LIFE How Do They Mine Diamonds? This Chimpanzee Will Beat You at Memory Games Building The Holodeck – Microsoft Edison Labs