Radical Firearms FR16-5.56SOC-15MHR: The Radical Firearms 16\" Socom 5.56mm AR rifle uses MIL-STD Upper and lower receivers along with our 15\" MHR free-float MLOK rail system for increased accuracy, keeping your hands cool, and giving you plenty of room for accessories. The rail system features integrated MLOK and Picatinny attachment points for ease of use, picatinny partial quad rails at the front of the rail system where you would typically atach the majority of your accessories, with smooth MLOK on either side and below to allow you to attach additional accessories, while not hurting your hand. It utilizes a 4140 chrome moly vanadium barrel, black melonite finish, with a 1:7 twist, and an A2 flash hider. Furniture is a tactical B5 pistol grip with aggressive grip texture, and comfortable 6 position B5 Bravo butt stock. Enhanced texture magazine release, Quick detach sling points in the B5 butt stock, and integrated into the left/ right side forward picatinny rails. Comes with 1-30rd magazine. Radical Firearms offer great value for the affordable price point.