The C&H Precision Weapons CHP Adapter Plate, Converts the RMR Footprint to Holosun 407K/507K, Anodized Finish, Black, Includes Mounting Hardware RMR-HOLOk is a high-quality and reliable product manufactured by C&H Precision Weapons. This product is designed to offer compatibility between your RMR optic and the Holosun 407K or 507K models, as well as the C&H EDC. With precision engineering and a durable construction, this conversion kit allows seamless installation and ensures optimal functionality. The C&H Precision Weapons CHP Adapter Plate, Converts the RMR Footprint to Holosun 407K/507K, Anodized Finish, Black, Includes Mounting Hardware RMR-HOLOk is the perfect accessory for firearm enthusiasts looking to enhance their shooting experience. Shop now for this must-have product in the 'Shop All' category.