I made the original post about CA compliant S&P. Of course I wasn't referring to the 15-22 (which I have but haven't been able to get out and shoot yet). I was referring to centerfire rifles. At any rate, after my post I spent even more time researching and found that the CA attorney general by regulation says that a bullet button saves the day on rifles which are not Class 1or 2 (banned by specific model designation or by comparison to banned models). Class 3 rifles are those that have a "removable magazine" plus one of a half dozen other features (such as flash supressor or pistol grip, etc). So attorney general agrees that if a tool is needed to remove the magazine that it is not "detachable" and therefore legal in CA. Still may not have magazine with capacity greater than 10 rounds. And of course rimfire rifles, regardless of features, are not prohibited in CA (but magazine can't hold more than 10 rounds).