I own AR-15s chambered for both and there is a world of difference in the size vs capacity of the magazines. To carry five 20-round magazines for the 7.62x39 model I have, you need some serious pockets. That’s why I posted the question. And, the AK-47 mags are even bigger and bulkier in size. This guy doesn’t look to be carrying anything other than what is in the rifle.
I guess it is a matter of personnel opinion.