So I went to the gun show yesterday, and picked up the rest of the parts for this:
It's an AR-15, with a 20 inch barrel, flip up sights, and bipod. All that's left to get is some optics, and I should have a fairly reasonable long range rifle. I also put a magpul stock on it after I took the picture. I had the lower put together for a while, I just hadn't found any uppers that I liked.
The first one I built was a stock RRA kit. This second one is more customized. I did put a Magpul CTR stock on it after I took the picture, but i'll probably invest in something a bit more appropriate when I get some optics.
Since distances can be deceiving with cameras, there's no way to tell for certain. However, it looks like the man has decent muzzle control and if the camera operator was more than a few feet away, he definitely didn't get swept with the muzzle.
While not something I'd be comfortable doing, this is nothing that professionals don't do anyway. Note that he keeps the muzzle pointed down when not actively seeking with the weapon, and that he rotates the muzzle down and parallel to his body when crossing from left to right or vice versa.