Removing rust from a joystick

[gyruss]

I'm in the process of restoring my Galaga CP and parts of the joystick are covered with a thin layer of rust.

Of course i want to remove it, but what's the best way to do this?

[Superully]

anti-rust bath & polishing

[gyruss]

Thanks!

[level42]

After that primer and paint (spray cans, good brand) because else it will look the same within days or weeks.