I saw this at Watervliet Arsenal today, out back with a few junk vehicles. I can only assume its some kind of mock up or experimental tank that was being developed there. The small square on the front hull says "NON BALLISTIC" (which leads me to believe this was a prototype). I cannot identify the chassis and the track appears to be solid rubber. Nothing looks like its been borrowed from another design ( the hatches, plates, skirts and doors on the back appear proprietary) The muzzle break alone looks like it weighs 500 lbs. Notice there appears to be a second, identical next to it which really kills my 'static mock up' idea. Sorry about only getting one picture, the other SSG in the vehicle with me wasnt much of an armor buff.
Im stumped. What the actual hell is this?