>>64160371
You're carrying 120, maybe 150 rounds of 7.62x51mm NATO for a G3 or FAL (and not even all in magazines depending on the time), while you can carry 300 rounds of 7.62x39mm for an AK, particularly when you're using lighter weight bakelite mags instead of the old ribbed steel ones. That makes enough of a weight difference that you could throw in another 30 if you really wanted to.