Just to keep it accurate, the gun depicted is a 'Field' grade and not a 'Superior'. There was also a 'Venture' grade that was an extractor gun. All were well made and hand fitted at the time which means any of the parts bought back when, also required some hand fitting by a qualified gunsmith. Finding a correct set of bbl.'s is going to be difficult, but not impossible. I've bought two sets from individuals over the years and had them fitted as extra sets to guns I have. Of course, the numbers do not match, and the expense gone to will never be recovered.