ThinkFun Fire Machine set (crossbow)

This is an easy to build crossbow expansion set.
This crossbow is made to use it in your hand or to attached it to your fire machine
You can also use your imagination to build your remixed version.
The new pieces allows you to make with the crossbow a very long shoots.
One thing that I didn't made is to create the crossbow machine box with some cartoons.
I think that is better if you create your crossbow box by you own, in this way you will have fun and you will increase your imagination.