For those of you who haven’t seen the brilliance that is Eraser , you might be wondering what a railgun is. Essentially, it’s a magnetic Howitzer: the rails are magnetized, and a projectile is placed on them. The intense magnetic fields force the projectile along the rails and fling it out the barrel, where anything in front of it is going to have a very, very bad day.

Why is this so interesting? Two reasons. First, the lack of chemical reactions needed means it won’t be prone to explosions like current munitions. Two, experimental railguns have thrown projectiles at more than five thousand miles per hour . That’s nearly eight times the speed of sound. You want to see it in action? We can oblige.

Yes, you just saw that bash through a chunk of concrete like it was paper. We want one. We can’t have one, but we want one. First industry railgun delivered

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VIDEO: The Navy has a fully operational electromagnetic railgun and it’s