Don,It looks like one of the DARPA never see the light of day projects.AKA: vaporware.That's a cyclic rate of more than 1600 rounds per second! Who could afford to feed it? The ammo hopper would be bigger than the weapons platform.Thanks for the links.
You know, Haz, if that is correct, it isn't even a "Firearm" under GCA or NFA. MAIL ORDER!!!Mac.
Yup,technically they're .308 or 50 Cal pellet guns.