I remember that thing. Wasn’t it electromagnetic?
Here’s an article from gizmodo on the dread gun I found after I got curious.
http://gizmodo.com/224739/dread-silent—monster-weapon-spins-out-120000-rounds-per-minute
I think it is electrically powered, but it spins out the balls like a leaky centrifuge I think. From another article: “the DREAD is an electrically-powered centrifuge weapon, or centrifuge “gun.”
Pretty wild in any case. I wonder what the forces would be like for something spinning so fast, would it have a gyroscopic effect?
Freegards