A method for mounting a plurality of tool rails of a tool mounting system according to a desired orientation. The method includes mounting a plurality of tool rail supports to a base, wherein each of the plurality of tool rail support has a releasable mount and a lug mount. Each of the plurality of tool rails is assembled to include a mount plug receivable within the releasable mount of the tool rail supports, and a lug receivable within the lug mount of the tool rail supports. At least one of the plurality of tool rail supports is fixed with the releasable mount spaced apart from the lug mount such that only a desired one of the plurality of tool rails can be received in a corresponding one of the tool rail supports.