I originally started an AK-74 kit and was planning to chamber it in 5.56, but then a Galil came along and although it is heavier than the average AK, it eats anything that it's fed. I have learned that steel is better in the AK and I am saving my brass 5.56 for the ARs. AKs are much harder on the brass than ARs.
They all have their place. I really try hard not to think about pilfering ammunition off of dead bodies. Bad karma
Be safe.