Shop › BALLISTIC BBL 308WIN 20" RIFLE BALLISTIC BBL 308WIN 20" RIFLE $237.50 Ballistic Advantage Modern Barrel, 308 Win, 20", Heavy Profile, 1:10 Twist BABL308006M Quantity: Add To Cart Added! Ballistic Advantage Modern Barrel, 308 Win, 20", Heavy Profile, 1:10 Twist BABL308006M