Bloodslinger

Dual Shooting. You are able to use two weapon fighting when using two one handed firearms or a one handed firearm and light melee weapon, If you use two one handed firearms you can use a bonus action to fire your offhand firearm with no dex modifier to your damage.

Grit. You gain a number of grit points equal to your Wisdom modifier (minimum of 1). 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 expended grit points after a short or long rest.
You can optionally use a grit point to add/negate 1d4 damage to a shot received or a shot given.

Concealment. You are able to effectively conceal your firearms from view allowing for advantage when attempting to hide weapons from creatures attempting to search you for firearms.

Pistol Proficiency

Starting when you choose this archetype at 3rd level, you gain proficiency with a specific one handed firearm, allowing you to add your proficiency bonus to attacks made with a firearm.

Gunsmith

Upon choosing this archetype at 3rd level, you gain proficiency with Tinker’s Tools. You may use them to craft ammunition from basic ammo with blood magic making them ammo +1, repair damaged firearms, or even draft and create new ones (DM’s discretion). Some extremely experimental and intricate firearms are only available through crafting.
This takes time and leaves an ammo amount decided by the DM.

Hungering Quickdraw

When you reach 7th level, you add your proficiency bonus to your initiative. You can also stow a firearm, then draw another firearm as a single object interaction on your turn.

Blood blast

Upon reaching 10th level, you learn how to blast a cone of shrapnel and tainted blood, this costs an action and requires a dex save equal to your spell save. on a fail the enemy suffers 1d12+wis/dex mod necrotic damage.. On a success the enemy suffers half the damage dealt.

Heavy flow reload.

Starting at 15th level, you can reload any firearm as a free action.

Beastial siphon.

Upon reaching 18th level, whenever you score a critical hit on an attack with a firearm, the target additionally suffers half of the damage from the attack at the end of its next turn.

At 18th level, your firearm attacks score a critical hit on a roll of 19-20, and you regain 2d10+ wisdom modifier hit points on a roll of 19 or 20 on a d20 attack roll.