Weapon

Varies

This firearm uses standard ammunition, and can hold up to 4 rounds at a time. Expend an action or a bonus action to load a round.

While holding it, you can make a weapon attack and expend one round of ammunition to cast Catapult without paying it's material cost. After firing, you must use a bonus action to re-prime the Firearm before being able to shoot again. This can only be done while there are rounds in the firearm.

Catapult

1st-level transmutation

Choose one object weighing 1 to 5 pounds within range that isn't being worn or carried. The object flies in a straight line in a direction you choose before falling to the ground, stopping early if it impacts against a solid surface. If the object would strike a creature, that creature must make a Dexterity saving throw (DC 14). On a failed save, the object strikes the target and stops moving. When the object strikes something, the object and what it strikes each take 3d8 bludgeoning damage.

Cost: 200gp
Weight: 10lbs