Cloud Defensive PATCH556MM ATB Patch 5.56mm Black Velcro
https://www.tandktactical.com/shop/076625992655-cloud-defensive-patch556mm-atb-patch-5-56mm-black-velcro-36153
https://www.tandktactical.com/web/image/product.template/36153/image_1920?unique=fd994c7
These patches are designed to fit on the handle of your ATB for Quick caliber ID.
