CZ-USA 11387 Bren 2 30rd 5.56x45mmNATO Black Polymer
https://www.tandktactical.com/shop/806703113876-cz-usa-11387-bren-2-30rd-5-56x45mmnato-black-polymer-16860
https://www.tandktactical.com/web/image/product.template/16860/image_1920?unique=255ddba
Compatible with CZ Bren 2. It features a window for round counting.
