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The Ruger Standard Model is a rimfire semi-automatic pistol introduced in 1949 as the first product manufactured by Sturm, Ruger & Co., and was the founding member of a product line of .22 Long Rifle cartridge handguns, including its later iterations: the MK II, MK III, and MK IV.
While modern firearms are generally referred to by the name of the cartridge the gun is chambered for, they are still categorized together based on bore diameter. [citation needed] For example, a firearm might be described as a "30 caliber rifle", which could accommodate any of a wide range of cartridges using a roughly 0.30 inches (7.6 mm) projectile; or as a "22 rimfire", referring to any ...
The gauge (in American English or more commonly referred to as bore in British English) of a firearm is a unit of measurement used to express the inner diameter (bore diameter) and other necessary parameters to define in general a smoothbore barrel (compare to caliber, which defines a barrel with rifling and its cartridge).
Ruger KP345 (US – Semi-Automatic Pistol – .45 ACP) Ruger P345PR (US – Semi-Automatic Pistol – .45 ACP) Ruger SR Series (US – Semi-Automatic Pistols) Ruger SR9 (US – Semi-Automatic Pistol – 9×19mm Parabellum) Ruger SR9c (US – Compact Semi-Automatic Pistol – 9×19mm Parabellum) Ruger SR22 (US – Semi-Automatic Pistol – .22 ...
.22 caliber, or 5.6 mm, refers to a common firearms bore diameter of 0.22 inch (5.6 mm) in both rimfire and centerfire cartridges. Cartridges in this caliber include the very widely used .22 Long Rifle and .223 Remington/5.56×45mm NATO. .22 inch is also a popular air gun pellet caliber, second only to the ubiquitous .177 caliber.
It is chambered in numerous firearms including rifles, pistols, revolvers, and submachine guns and for various uses including plinking, hunting, shooting sports, and self-defence. .22 Winchester Magnum Rimfire (.22 WMR): also known as the .22 Magnum, this is a longer rimfire cartridge based on the .22 Winchester Rimfire cartridge with an ...
The P90 is a scaled-up version of the P89 chambered in .45 ACP with an investment cast aluminum alloy frame. It was introduced in 1991 as the company's first attempt at a .45 ACP pistol, and was in direct competition with SIG Sauer's P220, Smith & Wesson's 4500 series, and to a lesser extent Glock's G21 that came out the same year. The P90 is ...