Quick view Hatfield Hatfield Sas, Hatfield.usa20w Sas 20/28 Bl $255.28 The hatfield sas 20 is a semi-automatic 20 ga.Shotgun featuring a walnut buttstock and forend with deluxe checkering and a recoil absorbing 0.5" ventilated rubber recoil pad.The sas operating system is a unique blend of gas and inertia, where a gas... Compare Add to Cart