All of them
you select them
Unless there's a mod where guns use the same ammo, none
As far as I know, yes. You can. There technically the same as normal guns. In a certain way.
Get "Warlord" or "Warlord Pro" perk.
you need to buy call of duty mw3 and you need to register for call of duty elite
M16a4
Call of Duty is Call of Duty for the PC, Mac, Xbox360, Nintendo DS, and PS3. Call of Duty Reflex is the Wii version, in which you use the wii zapper.
Yes you can use headphones in Call of Duty: Black Ops
hmmm mabye the call of duty 2 disk
You use the default classes set by the makers of the game to get to lvl 4 that's when you can unlock guns and XP, you can also gain more XP by completing challenges and getting cool camos for your favourite guns.
no
No....