Shop › DD BBL ASSY 5.56 1-7 CHF 16" LW MID DD BBL ASSY 5.56 1-7 CHF 16" LW MID $327.00 Daniel Defense Barrel, Light Weight, 556NATO, 16", 1:7 Twist, Mid Length Gas System, Black Finish 07-078-09136-018 Add To Cart Added! Daniel Defense Barrel, Light Weight, 556NATO, 16", 1:7 Twist, Mid Length Gas System, Black Finish 07-078-09136-018