<Tr> <Th> Action </Th> <Td> blowback </Td> </Tr> <Tr> <Th> Feed system </Th> <Td> 9 - or 10 - round box magazine </Td> </Tr> <Tr> <Th> Sights </Th> <Td> Open iron sights, both fixed and adjustable </Td> </Tr> <P> The Ruger Standard model, also known as the Ruger Mark I, 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 . Its style is reminiscent of the German P08 Luger pistol, enhancing its appeal . It was marketed as an inexpensive . 22 caliber rimfire intended for casual sport and target shooting, and plinking . Designed by company founder William B. Ruger, the Standard model and its offspring went on to become the most accepted and successful . 22 caliber semi-automatic pistols ever produced . </P>

Ruger 22 caliber long rifle automatic pistol mark i