Shotgun Bash

You can use your shotgun as a maul as well as a firearm. In place of firing the weapon, you may take an attack action to use it as a two-handed melee weapon. This counts as a Strength Weapon that you have proficiency with, which deals 2d6 bludgeoning damage. This damage increases by one die when you reach 5th level (3d6), 11th level (4d6) and 17th level (5d6).