Leofoto Binocular Rangefinder Rail Kit 20 cm Black. The safety-stops and screws are all stainless steel and the plate is CNC machined from T6061 and hard anodized for durability. A hollowed out design makes the plate relatively lightweight and via the threads and included screws the plate can be secured to the M-LOK handguard of compatible rifles. You can then mount the rifle on Arca-type ball heads and other supports. Specifications for Leofoto FDM-02 Binocular Rangefinder Rail Kit: Manufacturer: Leofoto Color: Black Features of Leofoto FDM-02 Binocular Rangefinder Rail Kit Aluminum CNC Machining Package Contents: Leofoto FDM-02 Binocular Rangefinder Rail Kit Leofoto FDM-02: FDM-02 Binocular Rangefinder Rail Kit 20 cm Black