[IronJack]

Surely you jest! If and when this technology is ever made feasible, you can be assured that the peasants will never be permitted to use it. It will be reserved for our betters, you know, those highly trained folks like police, weigh station attendants, crossing guards, Diane Feinstein ...

[Charles Martel]

This is far from a new idea, Metalsorm has just repackaged the stacked-charge concept with electronic ignition.

This version is impractical for a number of reasons, the first being that you have to replace the barrel to reload. There used to be matchlock rifles that literally had a sliding lock and trigger mechanism, which would align with three or four flash-holes on the barrel. The shooter started and the front and worked back, firing the stacked charges just like in this new version. Once in a while, some combustion gas would leak rearward and *all* of the charges would detonate at the same time. I hope Metalstorm has world-class insurance; they're marketing a high-tech pipe bomb.