The Keencyclopedia
Neural Stunner
Item
Commander Keen's weapon of choice in Keen 4-6. The gun fires a green blast of energy, stunning anything that happens to get in the way. You have a limited amount of shots so be sure to collect them if you happen to find one in a level. They are worth 5 ammo.
Found in: Keen 4, Keen 5, Keen 6