Legendary Gunsmiths Volume 1 (Pathfinder)

From publisher blurb: One of the most fundamentally powerful discoveries in Aden's history was that of gunpowder. The battlefields of the Known Lands changed almost overnight, and now, centuries later, only a handful of the oldest living elves remember what warfare was like without the presence of the firearm on the field of battle. Although many can and do make weapons for sale to the masses, there are a rare few whose craftsmanship and innovation have made them legends among their own trade.