Barrett 12808 M107A1 10rd 50 BMG Black Steel
https://www.tandktactical.com/shop/816715012449-barrett-12808-m107a1-10rd-50-bmg-black-steel-1389
https://www.tandktactical.com/web/image/product.template/1389/image_1920?unique=af3fd34
This replacement or spare magazine is compatible with your Barrett M107A1.
