Pacific West Arms lower, Knights Armament Company Rail Interface System, Trijicon TA31F on a LaRue Tactical ACOG mount, ARMS #40L BUIS, Tango Down BattleGrip, Tango Down VFG
My S&W M&P 15FT came nicely outfitted with a Troy front rail and flip-up sights. I added an Eotech 512 when I got tired of using the iron sights with my bifocals and a sighting aperture.
Ok, it wasn't mine; it was Uncle Sam's M-16... I added a front post rail for a flashlight mount, and Uncle Sam provided a very nice red dot CCO for us. I never needed to mount the flashlight.
I also had a mamba sling, mag well cover, and Otis cleaning kit with a Hoppe's bore snake (made cleaning SO moch easier!).