Ruger MK I

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The first Sturm/Ruger firearms produced was the “Standard Model” .22 rimfire auto loading pistol in 1949. The pistol, based on the Japanese Baby Nambu pistol and priced at $37.50, was an instant success. The profile of the 4 3/4-inch barreled pistol was reminiscent of the popular German Luger pistol. The earliest pistols from 1949 through 1951 had a silver eagle with a red background. In 1951 Bill Ruger changed the background to black due to the loss of his friend and company co-founder Alexander Sturm. A bull barrel version of the Standard Model known as the “Mark I” was first produced in December of 1950. Variations of the Ruger Mark I were produced from 1950 until 1982 when the Mark 1 was replaced by the upgraded Mark II. These upgrades included a bolt hold open device and a 10 round magazine, as opposed to the 9 round magazine of the Mark I. Another improvement was the ability to open the bolt to check the chamber while the safety was engaged.

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