I recently bought a full-size Armalite AR-10, and I absolutely love it. Very accurate and reliable; a joy to shoot. Now I "need" another .308 battle-rifle, but I want this one to be a lightweight companion to my Armalite.
So I'm asking: what is the absolute LIGHTEST .308 battle-rifle on the market? The only criteria here is weight; it must be lighter than air! (figuritively, not literally).