The AKM is a modernized variant of the AK-47 with a wide range of improvements over nearly every part of the AK-47. It was developed in the 1950s by Mikhail Kalashnikov, and adopted as the Soviet service rifle in 1959. It has since become the most prolific of the AK series of rifles, finding its way all around the world and continuing to be used. It is often mistaken or mislabeled as an AK-47. The AKMS variant includes a folding stock.