These alterations allowed the rimless 9mm cartridge to be used in a revolver design.These revolvers were marketed to law enforcement duty issue, military, and civilian self-defense markets.Despite being popular with civilians, Bill Ruger wanted to get into law enforcement and security contracts.Smith Wesson and Colt at the time dominated the medium frame law enforcement double action revolver contracts.
The introduction of the Security-Six and its variants marked Sturm Rugers first attempt to enter the double-action revolver market. The corporations earlier designs had been Colt Peacemaker -style single-action revolvers. Ruger used investment casting for most parts in an effort to hold down production costs. 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. Rugers 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 Ruger Redhawk, introduced in 1980 and also designed by Sefried, was a scaled-up and improved version of the Security-Six. Ruger Old Model Single Six History Series Line EnjoyedThe six series line enjoyed sales success because of their basic features, solid construction, and competitive pricing. The Security-Six and its derivatives also became the standard issue service weapons of a large number of police departments, in addition many were exported overseas. While Rugers Security-Six line has been out of production since 1988, a total of over 1.5 million revolvers were produced and they remain well-liked and respected, as well as highly sought after in the second-hand market. Ruger Old Model Single Six History Upgrade Of TheRuger commissioned a heavier duty upgrade of the Six line that could handle a lifetime diet of full-powered magnum loads. Rugers answer to this problem was the GP100, which featured a beefier frame and barrel, stronger steels, a redesigned grip frame and, most notably, a triple-locking cylinder to give extra strength to the action. The GP100 quickly replaced the Security-Six in the Ruger product line, but the Six line is still popular with shooters and collectors today. Although medium- framed in size, the Security-Six was somewhat stronger than competing guns like the Smith Wesson Model 19 as the Ruger featured a thicker frame without a sideplate cutout, a stronger barrel shank support that prevented catastrophic barrel failure in the six inch model revolvers, larger, stronger internal parts, and an increased diameter cylinder with offset bolt locking notches. The new revolvers were initially manufactured in a blued carbon steel finish; in 1975 stainless steel versions of all models were added to the lineup. Featuring six- round cylinders, the Security-Six series represented one of the first modern revolver designs to feature a hammer powered by a coil spring utilizing a transfer-bar firing system, and was chambered for a variety of centerfire ammunition cartridges including.38 Special and.357 Magnum, as well as.38 SW and 919mm Parabellum (9mm Luger). All Security-Six series revolvers came with original equipment manufacturer (OEM) supplied service-style wooden grips. The wood grips were all manufactured for Ruger by W.F. Lett Manufacturing in New Hampshire, a now-defunct contractor. Most of these wood grips featured a diamond-shaped panel of pressed checkering, though smooth walnut grips with uncheckered panels were shipped with some commemorative models. Oversized walnut targetcombat grips were also available as a factory option. During the 1980s, some of the Speed- and Service-Six models were also shipped with rubber Pachmayr grips containing the silver Ruger emblem. Security-Sixes could be ordered with either service or target (combat) -style square butt grips. Nearly all Security-Sixes were chambered for the.357 Magnum cartridge, which also permitted the use of the shorter.38 Special cartridge. ![]() Barrel lengths available on the Security-Six included 2.75, 4, and 6 inches. This was largely a marketing decision and an attempt to capitalize on the lucrative law enforcement service revolver market. The Service-Six was normally chambered in.357 Magnum, though Ruger also built versions in.38 Special and 9mm Luger (Parabellum) for some police orders. The U.S. Military contracted for the fixed-sight.38 Special variant adding a lanyard ring to the butt and designating it the M108. It was to replace aging Smith Wesson Model 10 for issuing to air crews and military police.
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