Idiot-Proof Pistol

Idiot-Proof Pistol: 1d12 piercing; 30/120ft; An idiot-proof pistol is a cheaply-manufactured, mass-produced weapon designed to be ultra-rugged and practically impossible to mishandle. It may not be a terribly effective weapon, but you can use it as a bludgeon all you want, or leave it buried in sand for weeks and it'll still work. You may still add half your proficiency bonus to attack rolls with an idiot-proof pistol if you are not proficient with the weapon. Creatures have advantage on ability checks to figure out how an idiot-proof pistol works, and on ability checks to maintain or repair it.