22 Long cartridges can also be fired in the Long Rifle cylinder. 22 WMR cylinder, allowing the use of both cartridges. Ruger manufactures several 'convertible' models that ship with both a. Barrel lengths include 4⅝, 5½, 6½, 7½, and 9½ inches, available in both blued and stainless steel. 17 HMR (initially offered with a second cylinder in. The New Model Single-Six is currently chambered in. Specifications Custom Long Barrel 45 Colt/45 ACP Blackhawk over Standard Ruger Single-Six 9.5 inch barrel Ruger provides the transfer bar safety upgrade free of charge for owners of any old model Single-Six, though this may come with a significant trigger-feel penalty. The transfer bar safety allows the revolver to fire only when the trigger has been pulled. Prior to 1973, the Single-Six was produced without the transfer bar mechanism, making it less safe to carry with all six chambers loaded, and with the hammer resting on a loaded chamber. The term 'New Model' simply means that this model includes Ruger's transfer bar mechanism for increased safety, allowing one to carry the revolver safely with all six chambers loaded. The Single-Six is currently produced as the New Model Single-Six. The Single-Six was first released in June 1953. The Ruger Single-Six is a single-action rimfire revolver produced by Sturm, Ruger & Co. 32 H&R Magnumįixed or adjustable iron sights (the Hunter model has provisions for mounting a scope) Ruger New Model Single-Six (stainless) on top and Ruger 'Old Model' Single-Six (blued) on bottom.

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