This Ruger manufactured fourth variation 6 1/2" long blue finished barrel is for the early new model Single Six single action revolver manufactured in 1976 with an adjustable style rear sight and is in very good condition retaining the majority of its original blue finish with some thinning from holster wear and honest use. The bore is bright and rates excellent.  (file photo)

Markings: This barrel has the earlier markings : Sturm, Ruger & Co., Inc. / Southport, Conn. U.S.A. on the left hand side and Made in the 200th Year of American Liberty on the top.