That last bit is a Sius electronic target setup. (See: http://www.sius.com/e_default.aspx
.) There are more variations than you can possibly imagine for every shooting discipline. I'm not sure what model this is, but it appears to be a generic long-range wireless scorer; note the antenna. Common equipment in parts of the world where shooting is done only by people with money.
I was more interested in the bipod in the first picture, closest rifle. Note how it attaches *above* the rifle so that the rifle hangs below it. Some F-Class bipods seem to try to accomplish the same thing (move the rifle below the theoretical intersection of the two bipod legs) but still attach to the bottom of the stock, making them big, unwieldy pieces of equipment. I've always wondered why more bipods weren't designed to attach above the barrel because it sure looks like a more stable way to do things.