Quickly mount the Burris Thermal Clip-On (BTC) in front of your favorite riflescope, directly to rifles featuring a forward picatinny mounting option (common on AR and MSR platforms) using their Thermal Clip-On Mount. The QD rail mount Includes two heights of mounting rings for pairing with a wide variety of optics and mounting situations and ensures .25 MOA re-mount capability. Shooters can quickly remove the thermal for handheld use and back to the rifle at a moment's notice.