My AR-10, .308 with a 16in SS fluted barrel, 15in hand guard, Nikon 4-12x40mm Coyote Special, MagPul MOE stock comes in at 13lbs with the suppressor on it. If I dare to put the bipod on it, it is 14.6lbs.
image1 by Jason Mosler, on Flickr
image1 by Jason Mosler, on Flickr