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. 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 bl.Ruger Single Six Standard Serial Number History They will add an R for rubber grips or W for walnut grips or X for convertibles.Īgain this only applies if your gun is a '6 1/2' in. Old model Single-Sixes will have a catalog number starting with RSSM. There are occasions when blocks of serial numbers. It is not necessarily the very first serial number shipped, but it can be used to determine the approximate year your Ruger firearm was shipped.

only then you have a very rare Ruger.Īll 6 1/2 in. Single-Six Standard Model Revolver (Manufactured from 1953 to 1973) Caliber. These guns are very rare, and if your gun will letter from Ruger as a Mag. only guns but the frames were only marked Ruger. Just about all of these guns were convertibles, but they also still made a few Mag. After about serial number 340,000 they started marking the frames Ruger Single Six only instead of Ruger Single-Six Win.22 RF Magnum. And some where toward the upper end of the serial numbers they started intermixing the convertibles in with the magnum only guns.

Those Magnum marked frames ran from serial number 300,000 to about 340,000.

When Ruger started making the 6 1/2 in guns they only made them as a Magnum only and as such they started stamping the frames as such. I think that Ruger listed all 6 1/2 in guns in the Magnum only list even though not all 6 1/2 in Single-Sixes are Magnum only.Ī little history. Now after all of this being said this doesn't mean that your gun is a Magnum only it only means that Ruger used RSSM for all 6 1/2 in. Which stands for Ruger Single-Six Magnum.

Ruger single six by serial number