A tool holder system for carrying a tool on a person is provided where the tool holder system includes a harness comprising a plurality of body straps, a guide rail strap provided with a guide and an at least one guide locking strap secured to a front end of the plurality of body straps of the harness, and a sheath for supporting the tool wherein the sheath corresponds to said guide with a post secured to said sheath for maneuvering said sheath linearly in relation to the guide on the guide rail strap.