Shop › RADICAL BBL 556 16" MID 1-7 TWIST RADICAL BBL 556 16" MID 1-7 TWIST $179.99 Radical Firearms Barrel, Socom Profile, Mid-Length Gas System, 223 Rem/556NATO, 16", 1:7 Twist B16CV556SOC-M-17 Quantity: Add To Cart Added! Radical Firearms Barrel, Socom Profile, Mid-Length Gas System, 223 Rem/556NATO, 16", 1:7 Twist B16CV556SOC-M-17