You can take the Handle (Equip) action to equip two light firearms, instead of only one.
The buttstock of your two-handed firearms are considered simple melee weapons (1d6 bludgeoning) with the light property.
When you take the Attack action with a firearm, you gain a +1 bonus to the attack and damage rolls for each of your six fighter levels.
When you take the Attack action with a firearm, the attack roll can't be made with disadvantage, provided you are not blinded.
You can take the Handle (Reload) action with one hand and a shield equipped.
When you take the Attack action with a firearm, your critical hit threshold for the attack roll is decreased by 1.
You gain the following features:
You gain proficiency with firearms, and you gain a pistol, a musket, and 10 bullets.
You gain expertise with one firearm of your choice.
You can use the following maneuvers at each indicated fighter level.
When you replace a Technique option, you can also choose from the following options.
When you first take the Attack action with a firearm on your turn, you have advantage on the attack roll.
You add your Dexterity modifier to your initiative rolls. Moreover, when you take the Attack action with a firearm against a surprised creature, you have advantage on the attack roll.
When you take the Attack action with a firearm and have advantage on the attack roll against the target, you can forgo the advantage and make the attack roll as normal. On a hit, the target starts bleeding for 1 minute.
When you take the Attack action with a firearm, you have advantage on the attack roll, and you critically hit against a wounded creature, the target drops to 0 hit points if the lower of the two d20s would also hit it.