Step by step automatic rubber band gun tutorial

This is a step by step picture tutorial on making your very own automatic rubber band gun:

Videos
Firing the beast

http://www.youtube.com/watch?v=IBwp3HCSmiw&feature=youtu.be

Pivoting of the gentle giant

http://www.youtube.com/watch?v=DjDOSdvGGlY&feature=youtu.be