FN 663221 FNX 10rd 45 ACP Black Stainless Steel
https://www.tandktactical.com/shop/845737002558-fn-663221-fnx-10rd-45-acp-black-stainless-steel-12392
https://www.tandktactical.com/web/image/product.template/12392/image_1920?unique=08b7f1c
This magazine is compatible with your FN FNX.
