Iron Man Gauntlet
In the fan made Army of Darkness vs Marvel Zombies video (which can be found here) Ash gets his most powerful prosthetic to date, Iron Man's gauntlet.
Use Gung-fu to make ranged attacks with the gauntlet. The blasts do 40 damage and ignore 20 points of armor. When used to make melee attacks the wielder's strength is considered to be 5 higher.