The Krag–Petersson was the first repeating rifle adopted by the armed forces of Norway and was one of the first repeating rifles to be adopted as standard issue by a military force, being preceded by the Swiss Vetterli adopted in 1867. Developed by Ole Herman Johannes Krag, the action of the Krag–Petersson was uniquely actuated by an oversized hammer. Another distinguishing feature was that the cartridge rising from the magazine was not seated automatically, but had to be pushed into the breech of the rifle.
Testing by the Norwegian military revealed the Krag–Petersson was a robust, accurate and quick-firing weapon, and the Royal Norwegian Navy adopted the rifle in 1876. The rifle was extensively tested by other nations, but none adopted it. After being phased out around 1900, the remaining rifles were sold to civilians and often were extensively rebuilt. Today, it is so difficult to find one in original condition that the Krag–Petersson has been described as "the rifle everybody has heard about, but hardly anybody has ever seen". It was the first rifle designed by Ole H. J. Krag to be adopted by an armed force.
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