A character theme for D&D 4E, from the ZEITGEIST adventure path.
Knowledge of fusils - the cylindrical weapons that use explosive alchemical reactions to propel bullets at deadly speeds - has existed for centuries, but these weapons were considered inferior to existing magical attacks, which were more accurate and had less risk of accidental death. Only after the Great Malice did the Danoran military begin to refine and improve fusils. The latest innovations in these weapons, now commonly called ‘guns,' have led to their spread into Risur and Drakr, where industrial production helps equip armies with firepower on par with a well trained sorcerer.
Firearms fascinate gunsmiths, who are not content simply to purchase and practice with guns. They tweak and tinker with their own refinements, and whenever two such craftsmen cross paths they bargain and deal for each other's secrets. Especially now that firearms have moved beyond the null magic lands of Danor, seemingly limitless possibilities have opened up for the development of weapons that mix spellcraft and chemistry. Flint's city governor Roland Stanfield is already planning a technological exposition where gunsmiths and other inventors can showcase their creations.