Abstract: A guide rail splice sleeve provides for adjustable housing, gripping, and connecting of sequential guide rail segments. The device includes an elongated central member, first and second tension bars detachably connected to the central member at opposite ends thereof, and fastening elements for securely connecting the first and second tension bars independently to the central member. The independent connection of each tension bar to the central member permits sequential guide rail segments to be gripped or adjusted independently of the other. Additionally, the sleeve may include a hand tightening device so that the fastening elements may be adjusted without the need for tools. Also, the sleeve may include an extension for spanning any gap between non-abutting ends of adjacent guide rail segments.