From publisher blurb:
Ready to send your fantasy campaign out west?
Saddle up and get shootin’ with the Gunslinger Supplement. This module contains four western classes for your next character, including: the heroic Cowboy, dastardly Outlaw, tenacious Marshal, and the mysterious Spell Slinger.
More than just for westerns, these classes can be used for any fantasy campaign. They fit especially well in campaigns set in the Victorian era, the Great War era, or the Modern era.
This module features firearms that are designed for a fantasy setting. Gunpowder, also known as “dust,” is inherently magical, and bullets cannot be fired from an anti-magic zone. Firearms resemble magic wands, rods, and staves more than modern weapons. Firearms are their own proficiency, and are considered Exotic Weapons to those who aren’t proficient.
This module has been adapted from Westbound.