
22 Magnum cylinder for a little more range and power. 22 LR cylinder for inexpensive plinking and pest control and a. This example was produced in 1977, after Ruger had introduced their transfer-bar safety but before they started marking all of their pistols with a wordy warning. The Single-Six was first released in June 1953 and has probably taught more kids how to shoot a revolver than any other since. The Ruger Single-Six is a single action rimfire revolver produced by Sturm, Ruger. The grips are smooth oil finished wood with black on silver-colored logo medallions. MAGNUM CAL." and with the Ruger logo twice behind the cylinder stop notches. The front face of both cylinders are marked "445" in electropencil. NEW MODEL SINGLE-SIX", the right has the serial number. U.S.A.", the left of the frame is marked "RUGER.

The top of the barrel is marked "STURM, RUGER & CO., INC. 1977 Ruger New Model Single-Six Convertible Pre-Warning Single Action.
