Recently, I was asked to help appraise an estate. One gun that I had never heard of and could'nt evaluate was a Parker reproduction DHE 20 gauge with a set of 400/450 barrels. It had been to Africa and was used to kill a buffalo according to the wife of the deceased. It was so barrel heavy that I think he must of had a gun bearer. Do you have any idea who might have added the rifle barrels? Don Hardin.