ENT:Touch, how to give a player ammo?

Hey guys, i’ve been looking around, and couldnt find it out, I want to make an entity, which makes it when u touch it, u get ammo for all your weapons you have… how to do this?

this is the hook you need in your entity http://wiki.garrysmod.com/?title=ENT.Touch

I knew that already, but is there any way to give ammo on touch?