This is a factory Featherweight barrel with original finish. It was manufactured between the years 1955 and 1957, based on the #6 sight ramp with 14 lines.
Bluing - 90% with some light bluing wear but no problems.
Metal - Excellent with no problems.
Bore - 5/10 borescope verified with some wear and light pitting. This barrel still has life remaining, but is not perfect.