Picatinni Ring Top.Allows for attachment of an additional sight, flashlight or other accessories to the top of the ring. This unique accessory for the XTR Xtreme Tactical Rings allows the mounting of an additional sight such as the FastFire Sight or other add-ons such as a flashlight, laser sight or laser flashlight. Features: - Size: 30mm - Type: Tactical Ring Top Specifications: - Fits: 30mm Picatinny Rings - Finish: Matte Black30mm Picatinni Ring Top, Matte Black