Abstract: A firearm holster device may be positioned between adjacent surfaces within a bed. The firearm holster device may include a first arm having a first major surface, and a second major surface opposing the first major surface. The first major surface may include protrusions extending transversely outward. The firearm holster device may include a second arm defining an opening pattern, a hinge coupled between the first arm and the second arm, and a holster received by the opening pattern and to receive a firearm. The first arm may be positioned between adjacent surfaces of the bed.