The Single Horse Saddle is a purchasable item at any Large Barn or Ranch monument located on procedural RUST maps.
When bought from a Stables Shopkeeper for 75 Scrap, a player may then examine every horse at the purchase location and select any horse that they have available in a stall. Holding the E key and selecting claim while the horse saddle is in your inventory will make that horse mountable and property of the player. A horse saddled with this item may be mounted by up to 1 player.
Once a player leaves the Barn or Ranch, the purchased horse may be killed, ridden (or stolen) by any other RUST player on the server. As of the April 2023 patch, Horse Saddles may be removed from the horse, preventing the horse from being ridden, only led away instead.
There is also a two-person version, the Double Horse Saddle.
Check out our Stables Guide for a more in-depth description of the Large Barn and Ranch and how you can benefit from these monuments.