It's different every time you prestige.
Prestige 1 = 6 Classes
Prestige 3 = 7 Classes
Prestige 5 = 8 Classes
Prestige 7 = 9 Classes
Prestige 9 = 10 Classes
0 Prestige: 5
1 Prestige: 6
2 Prestige: 6
3 Prestige: 7
4 Prestige: 7
5 Prestige: 8
6 Prestige: 8
7 Prestige: 9
8 Prestige: 9
9 Prestige: 10
10 Prestige: 10
0 Prestige: 5
1 Prestige: 6
2 Prestige: 6
3 Prestige: 7
4 Prestige: 7
5 Prestige: 8
6 Prestige: 8
7 Prestige: 9
8 Prestige: 9
9 Prestige: 10
10 Prestige: 10
Probably not, but hay? Maybe.
When you first play, you must use default classes until you level up to Level 3 (I think). This is when you unlock custom classes, and you start with the m4a1
Level up enough to unlock custom classes. Select "Custom Classes" and Custom Class 1 should already provide it. Or, you can pick an M4A1 off the ground from a fallen enemy/teammate.
get one-shot-kills with a sniper to unlock
how do you unlock Municion viva on call of duty modern warfare mobilized
You unlock it at level 36.
You cant.
To get the extra custom classes you need to prestige 5 times
You get a new custom class to make. You usually have 5 custom classes to make and 5 that are made for you that you can not change. Each time you prestige another class turns into a custom class until all the classes are custom classes.
you can unlock it with you're first killstreak award unlock
no you don't. you lose everything except for your callsigns and emblems so its just like starting from level 1 again. its still worth going prestige though as you unlock more challenges to give you more callsigns and emblems.
Its automatically unlocked. Its a preset LMG and is customizable at level 4 when you unlock custom classes.