Na verdade o primeiro era russo e foi criado em 1916
Fedorov Avtomat
The first service weapon which can be identified as conforming to the specification of an assault rifle dates back to the First World War; the Russian Federov Avtomat of 1916. This was a selective fire weapon using a short-recoil action. It was originally chambered for Federov's own purpose-designed high-velocity 6.5mm cartridge, but as the Great War was then underway there was no chance of a new cartridge being adopted, so he modified his gun to use the Japanese 6.5x50SR Arisaka cartridge, large quantities of the guns and ammunition having been acquired by Russia to meet a shortfall in their supply of rifles. This was an excellent choice, as the cartridge combined moderate recoil with a good long-range performance, but only a few thousand Avtomats were made. They were used in action in the Russian Civil War and also as late as the Winter War with Finland in 1939-40, and thereby earned their place in small-arms history.