Overall, the best weapon is still the Hammerhead.
Damage is not everything in this game, and if I need to do damage, then I’d rather use the GOSL-R than the AK.
Hammerhead has awesome accuracy, reload speed is good, the amount of ammo is good, Grenades against AI are always nice.
The AK has just mediocre damage, reload speed is ludicrous if the weapon is dry, accuracy is also not optimal.
High damage doesn’t give you anything if you can’t hit every shot or shoot at all because you are stuck reloading.
Best secondary are still the MP7 and Kriss Vector, due to high dps.