Oh…I want this. Its basically a tag and aim system (think Mechwarrior). I wonder if they had to give some of the source up to the community. The company that makes this is called Trackingpoint out of Texas. Of course at 23 grand…its going to be a bit before I can get one.
http://techcrunch.com/2013/04/02/a-precision-guided-firearm-powered-by-linux/