

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 1972 to 1988) Calibers: 357 Mag, 38 Spl, 9mm Security-Six, Speed-Six, Police Service-Six Revolver and worth quite a bit on todays market.Ruger Security Six, Single Six, Service Six Serial Number History

002" (thousandths) larger in diameter for the 'new' Magnum cartridge. and thus was never meant to be a "convertible" ass the 22 magnum did NOT come to being until 1959, when the bore became. Welcome to the forum, good info above and yes its a very nice early 'flategate) RSS5,, the name meaning the loading gate on your gun ( the early guns ) was made ' flat' so as to not be confused with a Colt ( that has always been MY take on the reason "why") but soon to be found that was hard on the fingernails to open it to load and unload.a company called Premiere, made a replacement, rounded, loading, a bit longer that what was to be the "standard or norm" so Ruger did their own and was used from then on, sometime in 1957.nice gun, and the hard rubber (plastic) grips on your gun have turned to a shade from brown due to sunlight ( ultraviolet rays) or maybe even just getting "dry".wipe them down with a good oil or grease and the may darken up.many folks 'like' this brown shade.another thing to keep n mind is being your gun is a very early one, the bore diameter is on the smaller ( tighter) side.
