BRO CARNIVORE-450B-CU16-BLK 450BM 16 SPEC15 UPPER BROCARNIVORE450B. 450 Bushmaster Barrel Length: 16 in Color: Black Magazine Included: No BRO CARNIVORE-450B-CU16-BLK 450BM 16 SPEC15 UPPER BROCARNIVORE450B