A few things special about this one but most of all it sports 1 of only 1100 barrels made by Smith & Wesson when bidding for the US Gov contract. They did not win the contract but the barrels were exceptionally accurate and often found in the guns belonging to the elite shooting unit of the Army. I have been offered $1300 for the barrel by itself. This was 4-5 years ago. I should go back and look at my notes and do some additional research on this one.