N.J. Stat. § 43:15A-133
In the case of those persons who elect to terminate their membership in the Public Employees' Retirement System of New Jersey and to enroll in the Federal Civil Service Retirement System, as of January 1, 1969 they shall be no longer covered under Social Security pursuant to the State's agreement with the Federal Government. They shall continue to be ineligible for participation in the Public and School Employees Health Benefits program and they shall likewise be ineligible to convert any or all of the noncontributory and/or contributory group life insurance which coverage they may now have as members of the Public Employees' Retirement System of New Jersey. The withdrawal of their funds from the State retirement system and the establishment of service credits in the Federal Civil Service Retirement System shall follow the provisions of the National Guard Technicians Act of 1968 and likewise, pursuant to such act, they shall be eligible for all other employee benefits as provided to all other Federal employees.
N.J.S. § 43:15A-133