Glock MF100200 G20 10rd 10mm Auto Black Polymer
http://www.tandktactical.com/shop/764503100208-glock-mf100200-g20-10rd-10mm-auto-black-polymer-11033
http://www.tandktactical.com/web/image/product.template/11033/image_1920?unique=6b40f2a
This replacement or spare magazine is compatible with your Glock 20.
