I have multiple classes, but the ones I use the most(I didn't unlock all the guns and perks yet so this might not say a real class but one with guns and perks I like but didn't unlock yet, since I'm only level 23)
Class 1: Scout
Primary weapon: MP7(supressor, fast mag)
Secondary weapon: B23R(tactical knife, supressor)
Equipment: Tomahawk, EMP charge
Perks: Dead Silence, Dexterity
Class 2: Soldier
Primary weapon: M27(extended mag, acog sight)
Secondary weapon: Five-seven
Equipment: Frag grenade
Perks: Lightweight, Scavenger, Extreme Conditioning, Hardline, Lightweight
Class 3: Commando
Primary weapon: FAL OSW(Select fire, ACOG sight)
Secondary weapon: Ballistic Knife
Equipment: Tomahawk
Perks: Hardline, Lightweight, Scavenger, Extreme Conditioning, Dexterity
Class 4: Heavy Gunner
Primary weapon: HAMR(acog sight, extended mag)
Secondary weapon: S12
Equipment: Claymore
Perks: Flak Jacket, Hardline
Class 5: Sniper
Primary weapon: XPR 50(acog sight )
Secondary weapon: Skorpion EVO
Equipment: EMP charge
Perks: Dead Silence, Cold Blooded, Ghost