what is are good classes for mw3???? i am level 64?

it depends on what your gameplay type is. Do you like to rush or stay back and camp.

Its really up to you. I suggest:

Gun 1: PP90M1 at first then MP7 or ACR 6.8

Attachments: Silencer or extended mags

Proficiency: Range or focus

Gun 2: any

Perk 1: slight of hand pro

Perk 2: quickdraw pro

Perk 3: Dead silence pro or steady aim pro

Semtex and cuncusion

I hope you do good. Add me if you have an xbox: TH3_PENGUIN

Assault Rifles will dominate like every Cod since mw2. So i'll be using the best AR (looks like the Scar-L or the Type 95 if its good) with either RDS, Extended Mags, or Silencer with slight of hand, quick draw, and ninja/ sitrep. Machine pistol secondary or Stinger along with semtex and flash if i have quickdraw pro. My Shotty Class would be Spas 12 w/ range proficiency, extreme conditioning, blast shield, and steady aim with a pistol secondary.

Primary:Type-95 Rapid Fire/ Silencer/ Red Dot Sight

Secondary:Usp .45 Akimbo/Tatical Knife

Lethal Gernade:Claymore

Tatical Gernade:Flash/concussion

Perk 1:Sleight of hand

Perk 2:Quickdraw

Perk 3:Marksman

Honestly the Type-95 is good with everything and it's one of the most overpowering gun in the game with its 3-round burst being able to kill in two shots with good aiming. Its nice for assault killstreaks but it makes an awesome gun for support too I guess it just depends on how good you are. If you want to be real good with it I recommend you improve aiming because that's essential for semi automatics. :)

Primary: PP90M1 (amazing submachine gun) w/ silencer or extended mags

Secondary: FMG9 akimbo

1st Perk:Sleight of Hand

2nd Perk:Assassin

3rd Perk: Dead Silence

Death Streak: Up to you, I personally love Dead Man's Hand.

Killstreaks: up to you

ray gun and a taco