Top 5 High-Tech Guns

Very nice collection.

The printer cartridge didn't kill anyone and I doubt the metal storm will do either.

The whole thing is just a poor rocket engine that makes the recoil embarrassing, unless they aim to send the F18 into orbit according to the action/reaction law of Dynamics...

Now seriously, I foresee a very low barrel velocity that leads to almost no precision to hit a target at a decent distance or to inflict any significant damage to it (I would call it metal breeze). That's why they fire it (in animation) vertically, to be helped by gravity. However, the F18 will be put at serious risk to be hit by very low-tech weapons (remember the stealth bomber crash in Yugoslavia).

Possibly, the inventor is still working in the printers industry.