Firearm Expert

Your expertise in firearms gains you the following abilities. 

• You gain two grit points. 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. 

• You learn one trick shots of your choice from among those available to the Gunslinger Archetype. If a trick shot you use requires your target to make a saving throw to resist the trick shots effect, the saving throw DC equals 8 + your proficiency bonus + your Dexterity modifier.