I just ran across a newly released product for the Marlin 795 (and and other Marlin auto-loading .22 rifle made after 1996).
It is a 25 round, single stack, clear 'banana style' magazine. Its made by Shooters Ridge, and while it doesn't have metal feed lips, apparently the material they use is pretty durable. They also have slots on them so you can link two magazines together and have 50 rounds on board.
I ordered two of them, and will try them out. They cost 16.99 from the site I used, and I saw them on Midway for 17.99 also. If they are reliable, it will allow me to shoot my little .22 in a competition we have locally (IDPA style 2 gun, with a rimfire division).