No, most likely you're just sourcelessly inventing things out of thin air.
California's state law re: registering or banning assault weapons (Roberti-Roos, signed into law by a *Republican*, IIRC)
Arnold's campaign adviser Pete Wilson.
Barbara Feinstein added to my impression on this matter when she cast snide remarks at Arnold for using all those evil assault weapons in his movies. She was trying to drum up support for her efforts to expand and make permanent the federal ban. Political candidates in states much more pro-gun than California are being asked about the assault weapons ban. For the media, it's a nation-wide litmus test.