Actually we could learn a thing or two from them. How long did it take the west to get an intermediate cartridge assault rifle in service after the Russians did? We only recently started to introduce the "designated marksman" in the squad. They had that covered for ages. In machine guns they are ahead as well. The PKM is light and extremely reliable and their newer 12.7mm MGs are more reliable and way lighter than the old Browning .50cal. Then is the good old RPG. That has to be one of the most effective weapons on the battlefield even today.