>>317709948
I've only seen a couple of people actually use it so I doubt even most of the regular know about it but I'll explain it for you.
>Buy an AKM get ammo for it.
>Pick up and AKM mid round and put it on your back
>No need to fish around for a spare ammo box
>Before the round ends hold your own ammo box in one hand and a fresh one will respawn with you
>Give your old box and spare gun to a teammate
It won't replenish your original box but it will still contain a decent amount of ammo unless you were spamming it.

>>317709995
I don't believe it does. Unlike CS the money doesn't go to the players until the next round so you can't curbstomp their eco by killing them after the timer.