Firearm Adept (5e Feat)
From D&D Wiki
Prerequisites: firearm proficiency
You have learned to handle firearms in more than ordinary ways
- You learn two trick shots of your choice from among those available to the Gunslinger (CR) archetype in the fighter class. If a trick shot you use requires your target to make a saving throw to resist the trick shot's effect, the saving throw DC equals 8 + your proficiency bonus + your Dexterity modifier (if you are of a class that grants you a trick shot DC then use that instead).
- You gain one grit point. These points are used to fuel your trick shots. A grit point is expended when you use it. You regain 1 expended grit point each time you roll a 20 on the d20 roll for an attack with a firearm, or deal a killing blow with a firearm to a creature of significant threat (DM's discretion). You regain all your expended grit points when you finish a short or long rest.