High Quality Content by WIKIPEDIA articles! The AKM (Russian: Автомат Калашникова Модернизированный; Avtomat Kalashnikova Modernizirovanniy or "Kalashnikov modernized automatic rifle") is a 7.62mm assault rifle designed by Mikhail Kalashnikov. It is an upgraded version of the AK-47 rifle and was developed in the 1950s.