The U.S. Navy has clocked the speed of a railgun at seven times the speed of sound. Of course, you didn’t need to know that to believe it belongs on this list.
Arnold Schwarzenegger has held quite a few guns in his acting career, but few are as intimidating as his pair of railguns in Eraser. Even cooler than the explosive results of firing a railgun in Eraser is the plasma trail it leaves behind.
The swirly, blue trail is eye-popping and adds an extra level of awesome to the weapon. And don’t forget the night-vision scope on the side of the gun, which even uses X-ray technology to see through walls.