While we're on the topic, while looking at metalstorm and the whole electronic ignition thing, what seemed to be the biggest problem to me was reloading; you just can't pop in a new magazine, it looked like to do it quickly you'd have to replace the entire barrel, since the rounds are stacked up inside it already. The other thing that bothered me was that the velocities would be faster on the later rounds than the earlier ones because you have more barrel to build up pressure, so the shots wouldn't be consistent. Idk...for anti-missile/claymore technology, I could see it having a future, but in the realm of small arms (or large ones for that matter), you're going to want to some type of ballistic consistency from the firearm, as well as easy, fast, cheap reloading...I don't see it having much of a future in small arms because of these limitations...