Lichtenstein, who has his own gun permit, is a member of the Borough Park Shomrim, the Jewish volunteer patrol. He was arrested Sunday at his Pomona, Rockland County, home.
He would charge members of the Orthodox community between $5,000 and $25,000 to expedite their gun permit requests, community sources said.
The process typically takes at least a year and candidates with low-level criminal offenses are almost always nixed.
One applicant approved for a gun permit in 2013 had a long criminal history, the feds said.