I put this together and tested it with about 80 rounds. Cycling is perfect and the 20 or so mags I shot with held the bolt back on every empty mag. Accuracy is within a couple MOA (was shooting at 150m and 200m steel so can't give an exact figure)
Gassed to be on the reliable side. Still comfortable but after all it IS a carbine gas system on a 16" barrel!
Upper is an Aero/BA
BCG is Aero Precision Nitride
Handguard is ARstoner Mlok 10" (From midway, nice solid rail)
Barrel is unknown (looks like BCA) phosphate carbine gas
Charging handle is just a spare milspec nothing fancy.
Gas block is just standard lopro phosphate steel block with stainless gastube.
I have the A2 flash hider just loose on the muzzle since idk if someone would put their own suppressor hub on there or whatever. I can easily tighten that on and clock it correctly if you need me to.