I’ve been playing MW3 for a while now and have racked up a decent play time. I’ve seen a few people’s classes and have adapted them to my liking and I now have an ultimate class (so far):
Primary: PP90M1-silencer-kick/range
Secondary: MP9-silencer
Lethal: Semtex
Tactical: Flash
Strike Package: Specialist- Slight of Hand, Quick Draw, Assasin
Perk 1: Extreme Conditioning
Perk 2: Hardline
Perk 3: Dead Silence
The idea of this class is that with your first kill of flag capture you get Slight of Hand to reload with speed. Then with your third kill of flag capture you get Quick Draw to aim down sight quicker and, or throw grenades quicker (pro-versoin required). At your fifth kill or flag capture you get Assasin to be invisable to UAVs and stay alive. Then on you seventh kill or flag capture you get all the perks in the game! You become a super soldier!