my dad was in an AA unit when my country was at war.
according to him, machine guns were actually favored by everyone over igla's and **** because apparently they weren't very reliable. i quote "1 out of 5 did their job properly. they either failed to deploy as intended or detonated prematurely. bullets don't fail."
By the looks of it, this is a MiG-21, a piece of super old machinery. Russians seems to be using off their old munition and equipment. I've also read that in the Vietnam war soldiers were using bullets with gunpowder from World War II. Goes to show how much all politicians care about the lives of their military... en.wikipedia.org/wiki/Mikoyan-Gurevich_MiG-21