When I was really young I remember catching a movie on TV called "Runaway" with Tom Selleck. The bad guy in the movie, played by Gene Simmons, had a gun that shot projectiles about a certain size that homed on targets. Michael Crichton wrote the movie. I didn't really think it could happen one day, but I guess Michael Crichton was ahead of the curve once again.
Super bullet could strike target a mile away - CBS News
Super bullet could strike target a mile away - CBS News