I am looking to by a 3 inch 1100. I've been offered one in good shape but am wondering about some things. The barrel is marked 3 inch but the receiver doesn't have MAGNUM stamped on it. I thought they were identified on the receiver. If its a standard receiver with a 3 inch barrel will it and is it safe to shoot 3 inch shells? Any body know how long the ejection port should be on a 3 inch? I need your advice. the buttstock has a plastic plate, didn't the mag have a recoil pad?