Endothermic Rifle

Weapon

Uncommon

Reload (20-M)

D&D Firearm Rules

Check Weapon Properties for Nuclear definition

Experts gave it a complicated name; everyone else calls it a freeze gun. Based on laser technology, an endothermic rifle siphons heat away from the target rather than adding to it.
If used against bodies of water, each round can freeze up to 10 gallons.
Against creatures, it can slow down or outright stop movement.
Endothermic weapons inflict cold damage. If you hit,you gain a +1 bonus to your next attack roll against the same target. This is lost if you don’t fire at the same target or if you miss.
Shatter (1st level). If you reduce a Large target or smaller to 0 hit points with this weapon, it freezes solid; the next attack on it causes it to shatter into pieces.
Focused Beam (6th level). This weapon gains the Armor Piercing property.
Refrigerate (8th level). If you hit a target, its speed is reduced by 5 feet until the beginning of your next turn.
This is cumulative up to 10 feet. If you roll a natural 20, the target is restrained until the end of your next turn.