HK 51000200 416 Black Detachable 20rd 22 LR
https://www.tandktactical.com/shop/642230257924-hk-51000200-416-black-detachable-20rd-22-lr-23277
https://www.tandktactical.com/web/image/product.template/23277/image_1920?unique=434964f
This replacement or spare magazine is compatible with your HK HK416.
