DealNOW WITH NIB ANGLE CUT BOLT CARRIER GROUP. The Radical Firearms 16 inch barreled SOCOM 5.56mm AR rifle uses MIL-STD Upper and lower receivers along with a 15 inch FCR free float MLOK rail system for increased accuracy, keeping your hands cool, and giving you plenty of room for accessories. from AIM Surplus (Product F1RFFR16556SOC15FCRP) |