The Bunker is only open on the days that MMSC is open - Wednesdays, Saturdays and Sundays with the exception of 4-6 on Wednesdays, 11-2 on Sundays which are reserved for the Minuteman Sharpshooters.

New England International Junior Shooting Sports, Inc. (NEIJSS) is a non-profit organization that fosters and encourages national and/or international amateur clay target shooting sports competitions. NEIJSS conducts and engages amateur competitions in the clay target shooting sports, develops amateur athletes for national and international competition and educates amateur athletes in the clay target shooting disciplines.