Ruger Security Six Serial

Ruger Security-Six,357 magnum,6' Barrel,Stainless Steel, Excellent original Ruger Grips, adjustable Sights, Excellent overall condition! Store hoursThurs-Fri-10AM-8PM Sat-9AM-12PM. Ruger Security Six -.357 Magnum (Though the revolver could fire.38 special as well, some.38 special only models were offered for sale. This example of a Ruger Security Six is the original (Pre-151 serial number) model with the 'humpback' grip.

Yes, there's one big issue that it can have. You will never want to part with it.

Security-Sixes are great revolvers. If you find a decent one at a good price, GRAB IT. The same applies to the Police Service-Six, which is merely the Security-Six with fixed sights. The 'Speed-Six' is sort of a snubbie version of the Police Service-Six. The only thing I would change about the Security-Six or its brethren is the ejection stroke. I'd make it just a bit longer.

The S&W Model 19 will fully eject.38 Spl (though not.357 Magnum) cases. This is nice for IPSC competitions where speed counts, since.38 Special can be easily loaded to major power factor. The Security-Six, like the Taurus 65 or 66, has an ejection stroke just a little short to do that.

Unless you're competing, don't worry about this. Here's some info on both the Security-Six family (includes the Speed-Six and Service-Six) and the GP-100. Riuger started making their first DA revolver back in 1972 and continued production of the Security-Six until 1988.

The Security-Six is an excellent revolver. Much stronger than the competitor's S&W Mod 19 & Mod 66 K-frame but it shares some undesirable designs with S&W revolvers. Mainly the cylinder assembly and crane (yoke) mounting system. Both the Security-Six and S&W designs use a poor ejector rod that has a tendency to unscrew and lock up the action. Additionally, both share the same cylinder retention design where the only thing that keeps the cylinder from coming off the crane is a small frame stud.

Another common design issue is the full sized grip frame. It adds weight but not strength and limits the size of grips. Ruger introduced the GP-100 in 1986 to compete with S&W's Mod 586/686 L-Frame with near-identical profiles. The plan was to keep both the Security-Six product line (K-frame size) and the GP-100 product line (L-frame size) on the market but just 2 years after the GP-100 came out, sales of Security-Sixes dropped where it wasn't profitable so the entire Security-Six product line was dropped. In essence, the GP-100 could do everything a Security-Six could but it could do it better.

The Security-Six product line had several advantages to include a smaller diameter cylinder and a smaller frame, which could make it slightly more concealable. It was available in 38 Special, 357 Mag, 9mm, and 380 Rim (AKA 38 S&W), in both stainless and blued models.

Security-Sixes were made in 2 3/4', 3', 4', 5' and 6' barrels plus some models were available with heavy barrels. In all, there were 78 different model variations when you count sights, grip frame, chamberings, barrels, and finish. Until the very recent introduction of the 7-shot 327 Fed Mag, the GP-100 was only offered in 38 Special and 357 Mag. It has been available with 3' or 4' barrels with fixed sights and 4', 5', and 6' models with adjustable sights. Because the GP-100 has a grip stud instead of a full sized grip frame, it is actually a bit lighter than a comparable Security-Six model because the grip stud allowed for a larger cylinder and frame without increasing weight.

Soon after the Security-Six product line was discontinued, Ruger started making SP-101s (1989) that filled the need for smaller and more concealable revolvers. Between the SP-101 and the GP-100, Ruger covered the small and mid-frame revolver requirements much better than with just the Security-Six.

The GP-100 has several advantages over the Security-Six. The two most popular are the interchangeable front sight (adjustable sight models) and the grips. Because of the grip stud, GP-100s can be equipped with anything from very small to large grips.

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Internally, the GP-100 has a much better cylinder and crane mounting system that uses two ball bearings to secure the cylinder to the crane. Although disassembly/reassembly is a bit harder, this design eliminated the weak frame stud. Additionally, the cylinder and frame are more massive and hold up much better. If I had my choice between the GP-100 and Security-Six for either a range gun or for self defense, I would choose the GP-100 for several reasons. The Security-Six has been out of production for more than 22 years so parts are getting quite scarce.