Hack/cheat
You don't get unlimited ammo
You can not get unlimited ammo
There is no unlimited ammo in Black Ops.
You mod the game
The closest thing is the scavenger perk. There is no infinite ammo.
You need cydia
That is cheating, and we don't encourage that.
Really, the only way is to hack.
Scavenger Or Scavenger Pro
There is no code
hmmm i dont know sorry
big ammo is what the m60 extended mags is called as it has a lot a ammo per clip=100 bullets