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http://www.thingiverse.com/thing:603697
Rubber band gun - no screws required by nigeljohnson73 is licensed under the Creative Commons - Attribution - Share Alike license.
http://creativecommons.org/licenses/by-sa/3.0/

# Summary

Glue is also optional, but your milage may vary with the tolerances of your printer.  

I loved the simplicity of the original rubber band gun by @gavilan, but the need for screws, bolts washers, and no idea what size elastic band to use was a bit of a downer. So I built this with the innards.  

I also made the barrel shorter to work with size 10 rubber bands, well a standard is as good as a rest. The trigger elastic band is a size 16.  

Bring on the zombie apocalypse!!