A 10 second Google Search
Marine Forces Reserve (MARFORRES) website: http://www.usmc.mil/unit/marforres/Units/index.aspx
You can sort by state to make it easier. You'll be looking for units that are part of the 4th Marine Division (4thMARDIV).
Specifically, for Marine Reserve Infantry Regiments:
23rd Marines: http://www.usmc.mil/unit/marforres/4...s/default.aspx
24th Marines: http://www.usmc.mil/unit/marforres/4.../HomePage.aspx
25th Marines: http://www.usmc.mil/UNIT/MARFORRES/4...s/default.aspx
For each of these, look on the left hand menu under "Units" and that will give you the rifle companies, which is what you sound like you are looking for.