Not quite sure where to file this, but I think Gadgets is OK. This link goes to the Armed Forces Journal where they cover the annual shootout at Blackwater; this is a tradeshow of sorts for weapons and defensive technology makers. Lots of cool streaming videos of neat new guns and ammo plus a cool bulletproof glass demo.
The most insane video is this one where a blended metal rifle bullet explodes a pot roast. All things being equal, I'd rather not get hit by this thing.