The Beretta A300 Ultima Synthetic 20-Gauge 3 in Shotgun offers a gas operated system with a compensating exhaust valve and self cleaning piston. The design boasts an anodized receiver, a kick-off overmolded polymer stock and a Micro-Core recoil pad. Beretta A300 Ultima Synthetic 20-Gauge 3 in Shotgun - Shotgun Semi Automtc at Academy Sports