Well I got my upper together and tested it tonight, no problems, shot very well. Zero'd at 25 and adjusted the gas, then verified zero at 200 and played on steel out to 300.
Not the best pics:
View attachment 759001
View attachment 759002
It's sitting on one of my Colt lowers with a Geissele SSA-E trigger (lower will be built later this year). Upper specifics are:
Larue PredatAR 16" Wylde Chamber 1:8 twist LW Barrel
Aero Precision upper
SLR Rifle Works 14.7" "Helix" LW FF Rail
SLR Rifleworks Titanium Adj Gas Block
Rubber City Armory Competition Low Mass BCG (Nitrided)
American Defense Recon Scope mount with an old Vortex Viper PST 1-4X (this will be swapped for PST II 1-6X)
Griffin Armament M4SD II Flash-Comp
Radian Raptor Ambi Charging handle
The combination of low mass BCG and ADJ gas block worked extremely well. First time I've tried this, but when combined with the flash-comp recoil was very light and with the gas adjusted puts the brass in a neat little pile just off the bench. Next is a set of Magpul MBUS Offsets
Chuck