Rock Island 54172 1911 CS 7rd 45 ACP Blued Metal
https://www.tandktactical.com/shop/4806015541721-rock-island-54172-1911-cs-7rd-45-acp-blued-metal-5148
https://www.tandktactical.com/web/image/product.template/5148/image_1920?unique=c296ee8
This replacement or spare magazine is compatible with your Rock Island 1911 CS.
