This application discloses a device for hanging a holstered handgun along a side of a mattress. The device includes a plate member to be inserted between the underside of the mattress and the supporting surface below the mattress, wherein the side adapted to extend outward from the mattress has a pair of spaced apart hinge barrels each adapted to receive a hinge pin. Another piece of the device is a basket member to receive a handgun holster, wherein the basket member has a hinge pin extending from each lateral side adapted to couple into hinge barrel of the plate member. In a preferred embodiment, the front side of the basket member has a slot for interlocking with a tab on a handgun holster. The tab is preferably located on a belt loop device attachable to a holster.