I think i mightve found a glitch for black ops but sense i prestiged i cant buy, It is a camo glitch.

1. Go into black ops and wait at the start menu

2. Join a Friends session in a player match and quickly press start.

3. Go quickly multiplayer and go to Local>System Link and go to create a class and hover over any camo you want for a gun.

4. It will then transfer you to his game and test it out.

If it didn't work then ask if he can switch a lobby where a error message will show and it will say Unable to join. So then back out load up multiplayer and check. Thank you if anyone will try this or if someone has can you please state if it works.