We’ve seen many a potato gun in our day, but this mini bolt action version is cooler than most.
Using a custom machined Delrin bolt, a fitted Delrin reducer, and some PVC, the spud gun is capable of quickly loading custom shaved potatoes with the greatest of ease. Pushing the bolt (literally a bolt) forward forces the spud through the reduction coupling and into the barrel. Lock the bolt to the side, pull the trigger (an air blower) and two expansion chambers toss compressed air behind your starchy projectile.
See the gun in action after the break.
Details on the build are available at the project website, though these guns can be extremely dangerous and should only be undertaken by those trained in potato-based weaponry.
(via Hack a Day)