True Shotgun Answered
If anyone has been around knex guns for any period of time, you'll notice there are an amazing amount of misnaming going on. For instance, just because something has a pump does not make it a shotgun! A shotgun is a gun that fires little pellets of ammunition called shot. After looking at all the supposed knex "shotguns", I only found very few that actually fired shot. So I set out to make my own, and this is the result:
A true, pump action shotgun that fires three green rods at a time from a shell.
EDIT: Now an instructable