The 510C ARD is an Anti Reflection Device designed specifically for the Holosun 510C. Similar to a killflash, its design allows it to clip on internally to the optic itself, creating an extremely durable and easy to remove one-piece system. Created with anti-reflective material, there’s no glint you’d get off of a traditional 3d printed version.
NOTE: This ARD ONLY works when the original mount is installed on the 510C. The device clips on using this mount and will not work with any other mounts.