The number of conservative Americans of Jewish background is growing - trust me. Once the Blacks were mainly Republican. It can go BOTH ways.
Obama has been the biggest salesmen of conservative values in the Jewish Community.
Check out JPF - Jews for the Protection of Firearms.
You might also want to check out JPFO - Jews for the Preservation of Firearms Ownership, while you're out there checking things out.
Membership is open to all ... I'm a "Jew for the Preservation of Firearms Ownership" but I'm not actually Jewish.