I held in my hand today a new Beretta 92S full size (with factory RDO mount). The pistol had the black (Bruniton) finish but the barrel had the word “stainless” stamped on top. Is this a supply chain issue substitution or standard? The pics on Beretta website don’t show or describe a stainless barrel. The barrel was black finish like the rest of pistol. I am not interested in an RDO Mount but this one had it. I understand from the reviews on Beretta website people can’t find the adapter plates anyway.