Disc Shooter

DESIGN STILL IN DEVELOPMENT - PLEASE DOWNLOAD AND HELP DESIGN

A toy plastic disc shooter powered by rubber bands. Dubbed the "OSDS" as in Open Source Disc Shooter. This thing is intended as a derivative of several other recent Things:
Firing Mechanism
*Disc Shooter by d_goodman http://www.thingiverse.com/thing:4889
*5C Coin Dispenser by Madoxnet http://www.youtube.com/watch?v=t9huCbpgzkA
Discs
*Base Cover of Centrifugal Pump by Madox http://www.thingiverse.com/thing:4839
Ammo Clip
*One Leg Articulated Frog by Benjamin http://www.thingiverse.com/thing:4771
Gun Case
*Pencil Gun by Sublime http://www.thingiverse.com/thing:4674

I've broken the major components of the toy into design groups as such:
*Gun Case files - for the moment this is a straight copy of Sublime's pencil gun.
*Firing Pin files - these are the only parts I have printed out.
*Disc files - a variety of discs.
*Clip files - a draft clip design