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development of assault rifles
...Vladimir Grigorevich Fyodorov, father of Russian automatic weapons, married the 6.5-millimetre cartridge of the Japanese Arisaka rifle to an automatic rifle. In 1916 he unveiled his new weapon, the Avtomat Fyodorova. Owing to the turmoil of the Russian Revolution of 1917, only about 3,200 of Fyodorov’s weapons were delivered. Nevertheless, they pointed the way to future infantry weapon design.