I use the ten round magazines in my 10/22 but thought I would like to modify the release in case I decide to use extended mags. So about an hour later in my shop I made this extended release. It works great with those 10 rounders and you can retain your grip on the pistol grip of the stock and still release the mag. Very simple and easy to make and not my idea because I had seen ads for similar ones.............. http://www.coolguyguns.com/Ruger-10-22-Magazine-Release-Levers-interchangeable_p_35.html I'll see how well I like it and if it might need any modification yet. I might change the original spring to a heavier one maybe, we'll see.