Well, it looks like it that it has the BAD receiver. Rev Airsoft PH goes over the Golden Eagle MC6591M gas blowback rifle in this video. This GBBR is constructed primarily of metal, with polymer elements like the pistol grip and telescopic stock flask. Its solid metal build and features like a 12.5'' M-LOK bed, metal body, 22mm RIS/Picatinny rail, folding flip-up sights, adjustable SF-type stock, and an open-bolt gas system make it suitable for demanding airsoft games.