How do you paint a Nerf gun?

I want to paint my Nerf gun a different color but I don't know what kind of paint to use. Please help.

Use paint meant for plastics, and it's a good idea to do a relatively light-grit sanding on the plastic to make the paint adhere better. Here's mine I did a while back, dry brushed on some silver model enamel to give it a more worn look:
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Thank you for your answer. I like your gun.
Im getting one of those soon, any ideas for mods i should do to.it?? ;-)