Scrap Gun (5e Equipment)
From D&D Wiki
Martial Ranged Weapons
A large heave gun with a basket on top that grinds up materials, firing them at the target. It grinds up metal with rather small but many crushers in the weapon. The weapon is wielded by holding on the handles on the top, like the minigun from TF2. This can only be done by a medium or large creature, a medium creature only deals 3d6 piercing. A small creature has to use this as a siege weapon. The weapon is nonmagical, but can be enhanced to have +5 dmg maximum. This takes five long rests to finish, adding +1 damage per rest.
|Special Ammunition. This gun may take pieces of metal or stone that weigh up to 20 pounds and grind them up, firing them to use for ammo. For each pound the material weighs, this deals an extra 1 damage.|