Original sentence: The prototype of the 7,62 mm anti-aircraft machine gun was finished in 1931 and accepted for use as 7,62 mm kaksoisilmatorjuntakivääri m 31 or 7,62 ItKk 31 (7,62 mm double anti-aircraft machine gun model 31)
Edited sentence: The prototype of the 7,62 mm anti-aircraft machine gun was finished in 1931 and accepted for use as 7,62 mm kaksoisilmatorjuntakonekivääri m 31 or 7,62 ItKk 31 (7,62 mm double anti-aircraft machine gun model 31)