Firearm Master

Thanks to extensive practice with firearms at long range, you gain the following benefits:

• On your turn, when you score a critical hit with a ranged weapon or reduce a creature to 0 hit points with one, you can make one ranged weapon attack as a bonus action.
• You no longer have disadvantage on your ranged weapon attacks as a result of being prone, and while you are prone you gain advantage on ranged attack rolls made using firearms you are wielding with two hands.
• If you roll a misfire on an attack with a firearm, you can use your reaction to roll a d20. If the number rolled is higher than the weapons misfire score, the firearm does not misfire.