With the introduction of the Marine Corps Martial Arts Program (MCMAP), Marines now wear a color-coded MCMAP belt or rigger instead of the old web belt, indicating their level of proficiency in MCMAP (the web belt was phased out in 2008 due to a requirement for all Marines to achieve a tan belt rank by then).
The Marine Corps Martial Arts Program (MCMAP) replaced the traditional web belt with a color-coded belt system, indicating a Marine's proficiency level in MCMAP. This change was implemented in 2008 to ensure that all Marines achieved a tan belt rank by that year.