Not knowing all the barrel profiles by memory, this one is skinny except for right behind the gas block and at the chamber. It has NATO 5.56 1/7 FREEDOM stamped in it. It has a proprietary barrel nut, but it is a PSA hand guard. Other than that, it's a low round count PSA with a vortex strikefire and CMC #3.5 trigger. Buyer's market for sure, but if you were trying to sell this on the list of arms, price?