Seems good - American Defense Manufacturing .223 Wylde 16 Inch Barrel M-Lok Rail Upper Receiver

I've shot one of these recently and it seems legit. Plenty accurate, sub MOA capable with match ammo. Ran every time with general brass ammo and is low profile in terms of the handguard. If this is the model with the warcomp, I do not like that part. The warcomp is a comp and it's loud and blasty. A noticable difference at the range between it and a SF3P.