http://www.fnhusa.com/le/products/firearms/model.asp?fid=FNF045&gid=FNG007&mid=FNM0109
http://en.wikipedia.org/wiki/FN_SCAR
My favorite too (if I were in charge of what rifle for the U.S. military to use).
Also works really well with optics attached.
SCAR in 6.8.
That’s all you need.