Thanks everyone for the insight, pics and story. Looks like I will be putting an A2 front post near the muzzle break. Right now I am leaning towards buying a RRA Standard A4 complete upper, upgrading to their (Wilson Combat) stainless steel barrel, their chrome bolt, and their Operator muzzle break. It comes with an A2 front post so I will have to buy a low profile gas block and install it. I already have a 15" Samson forearm. Should be a nice setup.
I was looking at their (RRA) national match uppers, but they are very heavy.