The 'Arcane Marksman' tradition was created by the Elves, to take advantage of the strange technology known as 'gunpowder' and the firearms that utilize it.
A millenia and a half ago, a cadre of Elves became enamoured with the new technology known as collectively as 'firearms'. These elves sought to elevate the mundane and crass process into an elegant and magical experience. Liandri the Arcanist, an Elven mistress, lead the team of arcane craftsmen in their pursuit, crafting dozens of prototype arcane rifles over several decades, from their laboratories on Liefland. After nearly a century of magical experimentation, Liandri and her followers reached the point of viability in their research and formed a new Order: the Arcane Marksmen. A lifetime of research and testing now complete, the group transitioned into an active mercenary and adventuring party. Liandri and her Order traveled the known world, battling monsters, carving out civilization from the wilderness, defending the downtrodden, and testing their newfound skills. As time wore on, as happens with adventurers, their numbers eventually dwindled, until finally, only Liandri herself remained. While exploring an ancient, Old World ruin in a forgotten corner of South Drak Isle, she was slain, her lifelong goal of creating an Order of Arcane Marksmen a forgotten failure. Until, hundreds of years later, an adventuring team known as The Undying happened upon the dust of her bones, her arcane rifle (known as 'Equinox')... and her unresting ghost. A human Ranger known as 'Ironwolf" agreed to take up the title of Arcane Marksman to free the spirit of Liandri, allowing her to reform the threads of reality to bestow the knowledge of her Order and finally be free to eternally rest. From there, Ironwolf the Ranger/Arcane Marksman continued the traditions of the Order and sought to teach others the skills previously lost to time. Legends tell of the arcane rifle 'Equinox' having a counterpart... a firearm named 'Solstice'. These firearms supposedly can combine or compliment each other in some way, increasing their overall power.
A magically enhanced rifle worth at least 5,000 gp.