Ordered from Brownell's. Got the FDE one with the milspec fcg. Mated it to a FDE Stoner slick side upper and 13" ultra light h.g. I had a Colt AR bcg, a 16" 1/8 light weight barrel and a charging handle on hand. Got a Seekins adj. gas block and ordered a captive recoil spring. Will probably upgrade the trigger. Going to drop a Sig Romeo red dot on it for now.
So far I am impressed with it. Fits the upper like a glove with no play. Will get out and shoot it today and post some pictures. I should also weigh it just to see how light it is.