Railgun

The video is very long, tedious and boring, but these guns are amazing. What happens is there are two rails that electricity runs through, as the electricity passes the rails, its energy is passed onto the bullet and at the same time heats up the bullet. When the bullet is charged to the point of release, it's so hot that it actually melts the atmosphere ahead of it which allows for a much faster and more accurate shot.


http://www.military.com/features/0,15240,160195,00.html