There were only 25 30" repro barrels built.They made a prototype run just before the Japanese pulled the rug out from under Parker Repro.I have a set on my serial number 26 gun.I also had Briley tubes installed.They are so rare that this set you have is only the 3rd set I have heard of.I think a set of 30" barrels should sell for at least $3000.I priced my set at $3500 and had 2 offers at $3000 and chickened out and kept them.You have found what is probably the hardest to find combo of all.