It's not the AK's that are the problem. The problem is the RPD and similar series of machine guns that are chambered in the 7.62 X 54R cartridge. They have a much longer effective range than our M4 rifles.
The Druganov series of 'precision' rifles are also chambered for that cartridge. While they can't hold a candle to a bolt action platform in terms of accuracy, they're plenty good enough to engage our guys outside their envelope of effective fire.
L
They’re comparing the RPD to the M-4? We have the semi auto RPD for sale where I work. While I suppose that a very large insurgent could carry it uphill along with a couple of drums, it is essentially a crew served weapon.