Stomper & negative pressure cannons?

Discussion in 'Weapons & Pneumatics' started by jstod, Aug 17, 2013.

  1. jstod

    jstod Well-Known Member

    Joined:
    Apr 7, 2012
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    Location:
    Syracuse, NY
    Does anyone have the designs for the Negative pressure and stomper cannons that they would be will ing to share?