I read your post again Gary and Mine DOES have a flash hider. It is VERY similar to this one, but the bottom side is solid with the slots only along the sides and top.
http://www.midwayusa.com/product/343064/dpms-flash-hider-a2-1-2-28-thread-ar-15-matteAND mine also has the bayonet lug. JJ sent me a bayonet for it and the "Lock up" rattles a little due to the "Ring" being to large but other than that it fits nicely.