Energized Cartridge LV.4

Usage affixed to a firearm or crossbow
Activate Free Action-envision; Trigger You attempt an attack roll with the affixed firearm or crossbow; Requirements Trained
in use of the affixed weapon.
When activated, chose acid, cold, electricity, or fire, dealing damage of the energy type instead of its usual damage as well as 1d6 persistent of the same type on a crit.