Mossberg 75770 SA-20 Bantam 20 Gauge with 24" Vent Rib Barrel, 3" Chamber, 4+1 Capacity, Matte Blued Metal Finish & Black Synthetic Stock Right Hand (Youth). Mossberg's SA-20 uses a smooth cycling, gas-operated system for a lightweight, soft-shooting shotgun perfect for both hunting and target shooting. This Youth Bantam model has a black synthetic stock with a shortened, 13" LOP, 24" vent rib barrel with a matte blued metal finish, and a metal bead front sight. It includes Mossberg International's Sport Set of 5 choke tubes.