So here is what i am trying to achieve. I have a blood cannon and would like it to go off when i put the shotgun in my mouth and pull the trigger. So my question is what would the best way to trigger it be? I would like to do this with the trigger of the gun. I did not buy any switch/trigger yet nor a shotgun cause i was hoping some could lead me in a direction that doesn't have me heading to radio shack every hour