Spiked rocket (Nuka-World)

The spiked rocket is a weapon mod for the baseball bat $$

Effects
When installed on a baseball bat, the spiked rocket does armor piercing damage and increases the base damage of the baseball bat by 65 points. Furthermore, it does additional limb damage and improves the chances of crippling the target.

Location
Cito's Shiny Slugger has this mod, and can be acquired by completing the Safari Adventure section of the park.