According to the ATF database, there are 4 registered FFLs in Rehoboth, Massachusetts.
503 WINTHROP ST UNIT 4REHOBOTH, MA, 02769
51 WINTHROP STREET #1REHOBOTH, MA, 02769
275 PLAIN STREHOBOTH, MA, 02769
16 DEAN STREHOBOTH, MA, 02769