The firing pin of the GP100 is mounted inside the frame. Blued steel or stainless steel finishes are available, with stainless model numbers preceded by a "K".
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Available barrel lengths are 2.5 inches (64 mm), 3 inches (76 mm), 4 inches (100 mm), 4.2 inches (110 mm), 5 inches (130 mm), and 6 inches (150 mm) with partial or full length underlugs.
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Because of these features, the GP100 series is widely described as one of the strongest medium frame revolvers ever made. All of these models use the same thickness on the solid frame and double latching system as used on the heavy. The GP100 shares the crane lock from the Redhawk that was later used in the small frame SP101 revolver. The grips are now Hogue one piece rubber grips standard. Panels on the side, made of black plastic, goncalo alves wood, or rosewood, provide contrast to the flat black of the Santoprene. The stock grips are made of Santoprene, a soft, chemical resistant elastomer that helps absorb the recoil of firing. Patent 3,683,535) was granted in 1972 and Ruger's patent ( U.S. This was not a new innovation, having been used by Dan Wesson and some High Standard revolvers that predated the GP100. The grips could then be any shape desired, as long as they were large enough to enclose the peg. The GP100 series, instead, used a small rectangular "peg" grip large enough to enclose the hammer spring and strut. This meant that to have a round butt concealed carry version and a square butt holster or target version of the same gun usually meant having two different frame shapes. Traditional revolver frames had exposed metal at the front and rear of the grips, with the frame determining the shape of the grips. The first significant change was introduced with the Ruger Redhawk and that involved a new locking mechanism with a lever on the crane rather than using the end of the ejector rod to lock.Īnother change was the shape of the frame. It was made stronger with the intent to fire an unlimited number of full-power. It was introduced in 1985 as a second generation of the Ruger double-action, exposed-hammer revolvers intended to replace Ruger's Security-/Service-/Speed-Six line. The GP100 was an evolution of an earlier Ruger double-action revolver, the Security Six. Since its introduction, it has been produced with a number of variations including various barrel lengths and profiles, fixed or adjustable sights, and in blued carbon steel or stainless steel. 22 Long Rifle) revolvers made by Sturm, Ruger & Co., manufactured in the United States. 38 Special, & 10mm Auto), seven-shot (.357 Magnum &. The GP100 is a family/line of double action five-shot (. 38 Special, & 10mm Auto)ħ-shot cylinder (.357 Magnum &.
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357 ammunition.Ħ-shot cylinder (.357 Magnum.