Rossi 358-0003-00 RB22 10rd 22 LR Black Polymer
https://www.tandktactical.com/shop/754908212408-rossi-358-0003-00-rb22-10rd-22-lr-black-polymer-18595
https://www.tandktactical.com/web/image/product.template/18595/image_1920?unique=5019195
This magazine is compatible with your Rossi RB22.
