Same question....why are so many Jews LEFTISTS?? Isikoff and Klaidman are both Jewish.
Self destruction.
While this is addressing why Jews are anti gun, if you think about, it also explains, at least to some degree, your question. It is the best essay I have found on the subject.
I joined the organization. I recommend it to my fellow FReepers.
Jews for the Preservation of Firearms Ownership
https://jpfo.org/articles-assd02/why-jews-hate-guns.htm