The Classic AKMSU is the default of the weapon. As seen in the image below.
The modified image shows some of the new modules that will be implemented along with the new weapon. (those will also be available for some other AK weapons)
The Bakelite magazine (the light orange one) holds 40 cartridges and will be available as an upgrade to the default AKMSU
The Buttstock, silencer and others are modern modules and will be available in loot in accordance with the current module collection (post match reward).
