1) Browning Arms 12 ga 30" round barrel. 2) Winchester Model 12 12 ga 29 3/4" round barrel assembly. 3) Winchester Model 12 16 ga 20 1/4" round barrel assembly. 4) Remington 28 ga 25 1/4" vent rib barrel. 5) Remington 28 ga 25 1/4" vent rib barrel with box.