Its been a while.. but I ordered my upper 2 weeks ago. Took a chance and went with a lower cost upper from hardenedarms, I have found good reviews, and a couple bad, but I am hoping it will work out.
10.5 inch upper
Details from site:
Black anodized mil-spec finished upper receiver
Feed ramps for increased feeding reliability on barrel and upper
Laser etched T-Marked upper receiver
Chrome Moly High End Steel Barrel
Black Mag-Phos Finish
Chambered in 5.56 NATO
10.5" HBAR Profile barrel with M4 Extension
1/7 Barrel Twist
.750" diameter at gas block
1/2x28 threaded muzzle/barrel
Low profile gas block
Barrel dimpled to secure gas block
Carbine length gas system
A2 flash hider
10" Tactical Quad Rail without endcap
https://www.hardenedarms.com/ecProduct_229_27