The 'six series' line enjoyed sales success because of their basic features, solid construction, and competitive pricing.

The Ruger Redhawk, introduced in 1980 and also designed by Sefried, was a scaled-up and improved version of the Security-Six. Ruger's new double action revolvers were unlike other guns on the market in that they used a one-piece frame, rather than a removable sideplate, which lent them superior strength. The grip profile of the Sentinel was used on the 'Six' line. Sefried had previously worked for High Standard Manufacturing Company, where he designed the High Standard Sentinel revolver. As with all Ruger firearms, the Security-Six revolvers were robustly designed with large, heavy-duty parts for durability and to allow for investment casting. Ruger used investment casting for most parts in an effort to hold down production costs. The corporation's earlier designs had been Colt Peacemaker-style single-action revolvers. The introduction of the Security-Six and its variants marked Sturm Ruger's first attempt to enter the double-action revolver market. Smith & Wesson and Colt at the time dominated the medium frame law enforcement double action revolver contracts. Despite being popular with civilians, Bill Ruger wanted to get into law enforcement and security contracts. Development and history Īs far back as 1966, Ruger designers Harry Sefried and Henry Into began working on the company's first double-action revolver. These revolvers were marketed to law enforcement duty issue, military, and civilian self-defense markets. And in some cases, firearms may be stored for a length of time before they are shipped.įor details on your specific serial number you may contact our Service Department: 33įor serial numbers manufactured prior to our electronic records, or for an official letter confirming the details on your firearm please download and mail in the Request for Letter of Authenticity form.Ĭopyright © 2016 by Sturm, Ruger & Co., Inc.The Ruger Security-Six and its variants, the Service-Six and Speed-Six are a product line of double-action revolvers introduced in 1972 and manufactured until 1988 by Sturm, Ruger & Co. Also, within a model family the same serial number prefix may be used to produce a variety of different models, all in the same block of serial numbers. There are occasions when blocks of serial numbers have been manufactured out of sequence, sometimes years later. Ruger does not necessarily produce firearms in serial number order. It can be used to determine the approximate year your Ruger firearm was It is not necessarily the very first serial number shipped, but This number should be used as a point of reference The above chart shows the approximate first serial number shipped for (Manufactured from 1953 to 1973) Caliber: 22 LR Ruger Single Six Standard Serial Number History

Ruger serial numbers single six