i  was  reading  this  link   and  it got me to  thinking of  my  old  apple cannons  i  made as a child
======================================================================================
(B17) How do I obtain a classification from ATF for my "potato gun?" [Back]
Any person desiring a classification of a “potato gun,” “spud gun” or similar device must submit a written request (not e-mail) to the Director and include a complete and accurate description of the device, the name and address of the manufacturer or importer, the purpose for which it is intended, and such photographs, diagrams, or drawings as may be necessary to make a classification. A final determination may require physical examination of the device. Such requests for classification should be submitted to: Bureau of ATF, Firearms Technology Branch.
======================================================================================
any  one  got  any tales  or plans  to  share
i  never  knew  that a spud gun  was  taken  so  serious   loll
all  descriptions  of coarse  are  fiction  and  not an   admission  of guilt