Firearm Mastery

Firearms are complex weapons but you have demonstrated mastery over them and know how to make every shot count. You gain the following benefits when wielding a firearm:

- You critically hit on a roll of 19 or 20 with a firearm.

-You can reroll ones and twos to deal damage with firearms.

-If you roll a critical hit or land a killing shot with a firearm you can spend your reaction to make an additional attack.

-You can use a bonus action to steady your aim and make an attack roll with disadvantage and if the attack hits double the weapon's damage die.