Here's my M&P-15 ORC in my preferred pseudo-scout format...my AR's are used mostly for plinking at the range and for quick shots on scurrying varmints on the ranch. Nothing fancy, just a Leupold 2.5x28mm IER scope (on a YHM 6" extended rail and the Colt/B-square 1-piece mount) and a Surefire G2/KX4 flashlight.

I do also like being able to use and practice with my irons without removing the scope with this setup.