On the show Forgotten Weapons, which at this point should be renamed Interesting Guns, Ian interviews one of the founders of a company selling a prototype but working coil gun:

It’s not very powerful right now; it shoots projectiles about as heavy as the arrows I shoot from my 90# compound bow at about the same speed that I shoot them from my 90# compound bow. But it’s a genuine portable coil gun, which means that we’re living in the future.

(For those that don’t know, coil guns use magnetic coils to accelerate steel projectiles.)