You must be in CA or one of the other commie states. They normally come with a 15 rd non-rotary mag.Picked mine up a few weeks ago, great rimfire gun. The only complaint that I have is that the 10 round rotary magazine is difficult to load. My fingers aren't up to the task installing rounds in the mag. Perhaps Ruger can come up with something better.
I have loaded so many 10/22 mags (same mag) I can do it in my sleep, fast, now. A little practice and you'll get the hang of it.