[Marcello]

From what I recall, but small arms is not my field, one of the main selling points is supposed to be the special two rounds burst mode which makes possible to hit close where the first round impacted: the second round is fired so quickly after the first that recoil etc do not affect it too much. This is supposed to help to pierce body armor, as the ballistic plates do not stand up well to cumulative damage.
It however is pretty expensive and complex design, which makes general issue not feasible.
They presented an AK-200 last year: supposedly an AK-74M with fittings for optical sights and such.Some believe it has balanced action as in the AK-107, with improved accuracy.
This would likely make a better candidate for general issue.

However in the game all these issue are pretty academic.