Thompson Center Hawken Black Powder part. This barrel is in great condition. There is no rust, all the bluing is intact, and the bore is clean and shiny. I don't think this barrel has been shot, Look at the picture of the nipple area as there is no wear, nor is there any burn marks on the end of the ram rod. This is a 54 caliber, and it measures 1 inch across the flats. Check out the pictures. There is no stock listed for this barrel. Absolutely no international shipping. You must be 18. Please ask questions prior to bidding. It is the buyers responsibility to know their states regulations. I will accept returns on this barrel, however, it is the buyers reponsibility to pay return shipping, insurance, and any ebay fees incured by the seller for this transaction.