A stunstick was a hand-held directed energy weapon. It was a one meter-long rodlike weapon that was used by cadre forces fighting for control of the Turkana IV colony. The weapon was capable of delivering a powerful shock to an opponent, with a direct hit capable of cracking bones.
The weapon was not named in the episode. The name is derived from the shooting script. The script describes the intended beam effect as "a bright, crackling arc flash", though in the final episode the visual and audio beam effect was identical to the phaser pistols used by the colonists. This would suggest the weapon was eventually intended to be a phaser.