I haven't seen any for it. I did find an aftermarket fifteen round for my Marlin 795 at Sportsman Guide but it had to be modified before it would work. High capacity seems to be for Ruger 10/22 and Remington 597.
Call (866)686-7424 or (845)679-2417 M-F 8:00 a.m. until 7:00 p.m. Eastern and they will give you a recorded code for free standard shipping. If you have a large order it gives you about $5 off the total shipping.