R’ Meir Kahane, HY”D, ZT”L, was 100% correct on this matter- for every Jew, a .22. Jewish antipathy to guns is foolish and unfounded. Self-defense, including preemptive acts of defense, are not only moral, but also halakhically mandated.
The confiscation of guns undertaken by the Nazis, y”s, and the Bolsheviks, y”s, and every other authoritarian regime to plague the earth should be fair warning to all of us.