Shop › BALLISTIC BBL 5.56 16" MID GOV 1/7 BALLISTIC BBL 5.56 16" MID GOV 1/7 $166.25 Ballistic Advantage Modern Barrel, 556NATO, 16", 1:7 Twist, 4150 CrMoV, Midlength Gas System, Government Profile BABL556015M Quantity: Add To Cart Added! Ballistic Advantage Modern Barrel, 556NATO, 16", 1:7 Twist, 4150 CrMoV, Midlength Gas System, Government Profile BABL556015M