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. The Supers skipped SS numbers, and their prefix was 60-00001 to distinguish them from the SS guns.Īgain, a lot more info is in the RENE Guide & we HIGHLY recommend it to ALL who have an interest in Rugers! Contact Chad & spend the $25.I bet your gun is a 6 1/2 in bl. There is a little overlap in the 500000 range of things, but the RENE explains things. Notice the skipping of the serial number block of the 400000 for the most part. The adjustable sighted guns, called the 'Super Single-Six' started with serial number 400001 and went to 400001 to 572014. (Per RENE.) In 1967 the serial number range was 475650 to 490278. The OM Single-Six Convertibles started in 1961 with the serial number of 162xxx and went to 1973 with a serial number of 21-56105. So, we look in the RENE Guide, under the Single-Six Convertibles, and the list of serial numbers, by the years, allows us to say your gun was made in 1967. If your gun had the adjustable sights, it would be a 'Super Single-Six Convertible.' The Magnums were dropped & Convertibles were offered. It was because folks were asking for the other caliber for their guns. In 1959, the Magnum Single-Sixes were produced, and later on, when they decided to make just one model, they made convertibles. Any fixed sighted Single-Six with a serial number before 150,000 did not have the mag cylinder.

The number places it in the production era after the magnum cylinders were being added to the Single-Sixes. So, as you already know, your gun is a FIXED sighted gun, and that makes it a 'Old Model Single-Six Convertible.' It's not marked 'magnum' or it would have a different serial number block. MUCH better than any other resource for us. You can join RENE, and Chad (chet15) has a Reference Guide that is INVALUABLE to collectors. As FM alludes to, we use the RENE Reference Guide for information.

Ruger single six by serial number