Mossberg has a new AR-15 that, right out of the box, is configured exactly how I want. They call it the MMR Tactical. MMR stands for Mossberg Modern Rifle. It has the barrel, stock, fore grip, flat top, weight and sights I have been looking for.
Mossberg MMR 556 Tactical
I still have not handled one so I may change my mind. The best part may be the modest price. Internets says it can be had, as configured above, for about $800.
--This may find it's way to the want list. Let's hope so.