I just called them to ask if it was a stainless steel barrel, and Tim said he could not tell me what the barrel was made from, I asked him if it would rust and he said "all steel will rust", I said I hunt in the southeast in the rain, he said "our barrels are used by Beard's McOperator's everywhere in the world and are found to be satisfactory", I said your a little evasive and he said "yes sir I am". I will hold off on the $495 unobtanium barrel for now.