Hey Butch,
there is no ER collet for the Makita hand trim router, you would need to either buy a spindle, or Onefinity would release a Z slider for what I call the Best milling motor solution for hobbyists and semiprofessionals, a slider e.g. like shown here so you could use the FM 1000 PV ER (with ER collet). It also has speed control interface.