Ethor: Desert World
This section is about Firearms. For the most part just using Ptolus firearm rules as seen here.
Ptolus firearms in a wiki
or page 559 in Ptolus: Monte Cooke’s city by the spire.
Note there may be cannons later on
The Sting is a simple weapon replacing Crossbows
The Double Pistol replaces Bows
Firearm proficiency – you become proficient with standard firearms
Flame Weapon Prof – you become proficient with Flame weapons