I've probably had this at least 10-15yrs. Don't remember exact details but from chamber stamping I assume it's 4140 chrome-moly & 15 twist. 34" OAL and 1.732 diameter at chamber end for first 8.5" tapering to 1.513 at muzzle end. Slight surface rust in a couple areas. $400 shipped - PP f/f, USPS MO, check.