to unlock the stinger missle in mw2 you must be level 30 or sergent major II
To unlock Stinger Veteran III, as well as the title (has gold skulls on it), you need to shoot down 2500 helicopters with it.
if u mean what level u have to be to prestige in mw2 the answer is level 70
Reach Prestige 1 and Level 69.
Level 4
Level 70, which is the level cap.
commander
The Stinger is a vehicle lock on only weapon. Use it for helicopters, harriers, or other vehicles. You can use it by aiming at the Enemy vehicles wait till you hear the beaping get really fast then shoot.
Level 22.
you carnt do mw2 campain two player
in cod black ops there is a 15th prestige and in mw2 there is only 10 prestiges because to prestige in mw2 you have to get to level 70 but in black ops you only have to get to level 50 to prestige
Level 48
level 70 enjoy