Your friend can try bringing the below directive issued directly from the Attorney General of NJ to the attention of the chief of police, and if no traction gained there, the mayor:   http://www.nj.gov/lps/dcj/agguide/directives/2016-4_Permits-to-Carry-Firearms_Directive.pdf   Page 2, middle of 2nd paragraph (my emphasis added, any typos are probably mine):
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