The Medium Tactical Vehicle Replacement (MTVR) is a series of vehicles used by the U.S. Marines. The first MTVRs were delivered in late 1999. The MTVR is the equivalent of the U.S. Army’s Family of Medium Tactical Vehicles (FMTV); the Marines do not use the FMTV (with the exception of the FMTV-based HIMARS) and the Army does not use the MTVR. There were originally four, later seven, MTVR variants, then nine (plus a sub-variant) as deliveries and development continued. A dedicated trailer and prototype/developmental MTVRs have also been produced.