The fur is right, go for the legs. But that doesn't make much sense now does it, aiming for the legs with a big and shiny chest waiting for you as well.
Meh, I don't know. I like the new weapons but I totally agree that they are being whored, badly. You can ignore it all you want, it does not make it any less true. Still, it's strange. Even though the AKM is fun to shoot, it's not as fun to shoot as some other weapons (M249, MK23, M1S90, G36 to name a few) so even though I can understand using the whore weapon, I don't see why so many people stick to only the whore weapons.
I used the AKM after my return to INF yesterday and I too found it very, VERY easy to use. I was doubting to take it ever again, for the same reason I don't use the M4. It just doesn't feel like I am aiming it at times, more like the thing has an integrated aimbot, atleast that is how it feels.
Oh and psych, to my knowledge, the m16a4 does not have iron sights.