factory G31 barrel for it to shoot 357 Sig from it. Is the G31 barrel fully supported or should I get another barrel to shoot the hot 357 Sig? I think I read somewhere it is better supported than the 40 factory barrel. If I was at home I would be able to see and answer the question. I am 6K miles away and have some time if the 31 factory barrel is not fully supported to buy one that is. Thanks.