Way of the Big Iron

Long time ago a deity known as Rick blessed or cursed, depending on who you ask, a monastery of Monks from the Way of the Open Hand. The new knowledge acquired by the weighted warriors allowed them to create a new type of ranged weapon powered by powder that was only used for explosives before. The mighty weapon was named revolver by its creators. A deadly and powerful tool, that needed precision and discipline to be mastered, a perfect weapon that symbolized the newborn Way of the Big Iron. 

Big Iron Technique

Starting at level 3 the monk gains the ability to fabricate a Big Iron (or to acquire one if returning to his original monastery). The Big Iron can be constructed using the gollowing materials: 2 Kg of Iron or similar methal; a piece of leather or similar animal hide; pieces of scrap metal (can be made using any metal) and a piece of small wood. To build the Big Iron you need a forge or ask for a metalsmith.

All attacks with the Big Iron have proficiency and use the dexterity modification on th attack roll.

The Big Iron can be loaded with 6 (at maximum) rounds made with metal capsules and powder (the monk also knows how to craft this).

A shot causes 1d15 piercing damage + dexterity modificator.

Each time all the rounds are fired a wisdom check must be done. If failed the revolver breaks and must be fixed taking a long rest.

Chi Transmutation

At 6th level, you gain the ability use your ki to restore rounds in the Big Iron. When you empty your weapon you can spend at max 6 points of chi to fully reload your Big Iron. This trait can only be used once per long rest.

Death Sentence of the Mighty .38

Beginning at 11th level you gain the ability to empower each one of your rounds with chi. Before rolling an attack you can decide to spend or not a point of chi to empower your shot. A empowered shot, after dealing damage, imediatly interrupts any concentration spells thats beeing cast by the target (without the need of a test) and marks him with a Chi Mark.

The subsequent empowered shot that hits the target with the Chi Mark makes it explode, dealing 1d15 necrotic damage in addition to the shot damage.

When you  fire all 6 rounds you dont need to do a wisdom test anymore.

You can know store your Big Iron in a dimensional plane known as the Prison. You can summon and unsummon the Big Iron whenever you want.

Discharge

Startin at level 17th you can "Discharge" you Big Iron. Before attacking you can empower all six rounds in one take and then unload all the six bullets against a single or multiple targest in one single turn. The Chi Mark works the same as if you were doing separated attacks and all the attack count as f they were individual. To Discharge you make 6 attack rolls. If all 6 empowered rounds hit the target he takes 10d10 necrotic damage in addition.

When a Discharge is performed you can reload all 6 rounds speting 6 points of chi imediatly.

If the target of the discharge dies, you can then perform another "Discharge".