Ak47 with silencer, ghost, sleight of hand pro, hacker.
Ak74U with grip, hardline pro, sleight of hand pro, marathon. I only use ak47 when im getting radar camped too much but i allways like to keep 1 class with hardline pro to switch to it when i get care packages.
i also have another class which is exact same as ak74u but with ak47 instead with extended mag which i normally rush with in wider maps, for me ak47 is more a sniper then a assault rifle 
Those are my main and favorites but if i just prestige normally i go for MP5K with rapid fire, hardline, sleight of hand, hacker.
And for stealth i go Enfield with silencer, ghost, sleight of hand, hacker.
I get bored easily normally tho so youll see me using other weapons some times.
