Gun Holster is an item found in Red Dead Revolver.
|| This holster is soft with use, yet healthy from regular cleaning and oiling. It is the holster of a dedicated gunman.
|| —Store description
As with all similar items, the Gun Holster is not used in the game beyond unlocking a journal page.
The Gun Holster can be purchased from the General Store in Brimstone after completion of the mission "Railroaded". If not purchased, it is not available during subsequent visits to Brimstone.