Gun Parry

Prerequisite: Proficiency in Firearms

When you are the target of a creature's melee weapon attack, you can use your reaction to make a firearm attack against said creature. On a successful hit you gain a bonus to your AC equal to your proficiency modifier for the duration of the creatures current attack. You also deal damage equal to the firearms damage dice negating any bonuses (For example, if you normally do 1 d10 +2 for damage rolls, the plus 2 is negated.)