The Guns of Avalon by Roger Zelazny

EDITORIAL REVIEW: Seeking vengeance against his usurping brother, Eric, Corwin, the rightful heir to the throne, ventures into the dark world of Shadow in order to gather ammunition, and is distracted by a beautiful and mysterious woman. Reissue.

https://rapidgator.net/file/975e6e92ee58a088060e3d00b90111a4/

https://nitroflare.com/view/47172589C9A7AC1/