I think that we need to restart the blog on this.
This guy built a 40 mm ball turret that would work great in small UAS's. He said that he would not sell it but i think having him post details of how he built would be nice.
Here is a video of tit working.
If anyone has other turret systems to share of Pan and tilt systems please post... I am looking for a good design to integrate into my UAS...