Custom rifle manufacturer DoubleStar built this modified AK-47. Its most obvious feature is the chainsaw fixed to the barrel, powered by a lithium battery so you don't have to be attached to an outlet when the zombie apocalypse certainly most definitely happens. If Ash had this, Army of Darkness would be about half as long.
~Not-"Not-So-Handy Andy" Jack
A lightzapper, of course! Or a bugsaber? Either way, this lightbugzappersaber is a fantastic way to get back at those pesky critters flying around your room. Never mind that you may look like a drunkard doing a Jedi impression to distant observers, but whatever, the Force isn't strong with them anyway.