Moving text on a gun

Hello everyone.

I have scouted UA for a answer but with no result. I just need some advice on how to do this: Image

If image dose not work here is the link to the picture:

Click me please

The text on the gun will update when shots are fired and when reloading ect. Can you please tell how one would go around doing this. Making the text on the gun change depending on the action made. Since I have no idea how to do this.

I would have each number spot be a separate plane with the numbers being textures that are changed via script. Or include the ammo count in the GUI.