Doublebarrel musket

[Winterfox707]

Would a gunslinger need to take proficiency in a doublebarrel musket, or would proficiency in musket work?

[Sangerine]

SRD wrote:

Gunslingers are proficient with all simple and martial weapons, and with all firearms. They are proficient with all light armor.

[Winterfox707]

How would it work for a "Musket Master"?

[OilHorse]

You are proficient in all firearms.

You will need to choose double-barrel musket for all abilities that require a choice.