АКМС Автомат_Калашникова_модернизированный_складной
The variant of AKM assault rifle with metallic MP40-styled bottom-folding stock. The letter S on "AKMS" stands for Skladnoy (складной), Russian word for "folding". This tag does not mean the plural form of AKM.
Not to be confused with AKS-74, the AK-74 variant with side-folding triangular skeleton stock.
This tag implicates akm (learn more).