Military history knows not many examples of how firearms does not lose its relevance for more than a century. The famous rifle of Mosin can be seen today in the exposition of the Museum of Local Lore.
The three-line rifle of the Mosin system of the 1891 model is rightly considered to be one of the most famous examples of Russian small arms. Officially, this model was adopted by the tsarist army under the name "three-linear rifle of the sample 1891". The name of the chief designer of the rifle - Sergei Ivanovich Mosin - was not mentioned in the title.
In the army, weapons were simply called “trilinear”. The name came from the caliber of weapons. The transition to a 3-linear caliber made it possible to significantly increase the range of fire and improve ballistic properties. “Three-line” was the first Russian shop rifle (in the store there were five cartridges). For close combat, a needle bayonet was attached to the rifle barrel, which consisted of a blade, a latch, a neck and a tube attached to the muzzle of the trunk.
The Mosin's rifle was the main weapon of the Red Army, all the recruits had to learn the device of the "trilinear" without fail, they learned how to shoot it. In 1932, the serial production of a sniper rifle began, which was distinguished by the presence of an optical sight. At the end of the 30s of the 20th century, more modern rifle patterns were created in the Soviet Union, but none of them received such a spread as a simple and reliable "trilinear".
During the Great Patriotic War, the rifle continued to be the most popular small arms: more than 12 million Mosin rifles were produced from 1941 to 1945.
After the war in the USSR, based on the "trilinear", several variants of sport rifles for target shooting were produced. Modernization of weapons continues today.