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The Fedorov Avtomat (also anglicized as Federov, Russian: Автома́т Фёдорова, romanized: Avtomát Fyódorova, IPA: [ɐftɐˈmat ˈfʲɵdərəvə], lit. 'Fyodorov's automatic rifle') or FA is a select-fire infantry rifle and one of the world's first operational automatic rifles, designed by Vladimir Grigoryevich Fyodorov in 1915 and produced in the Russian Empire and later in the Russian Soviet Federative Socialist Republic. A total of 3,200 Fedorov rifles were manufactured between 1915 and 1925 in the city of Kovrov, the vast majority after 1920. The weapon saw limited combat in World War I, but was used more substantially in the Russian Civil War and in the Winter War. Some consider it to be an early predecessor or ancestor of the modern assault rifle.
6.5×50mmSR Arisaka