Knex RBG Rifle [single Shot]

This is a pretty simple design, allowing for 1 rubber band to be shot at a time. What I've posted is just the mechanism [all the moving parts]. 

Its pretty simple, allowing for 1 shot at a time. It includes the trigger and hook for the rubber band. Just attach this to any strong barrel and it will work... remember to include a place to attach the front of the rubber band [but thats pretty obvious].

Rubber band goes here.

do what you did in steps 4 and 5 for this [sorry i couldn't provide a different picture]

For the next few steps you will only need one of these

Attach the second frame piece 

This isnt specific, just make a barrel and a handle or whatever. Just make sure its strong.