The Leupold Mark 4® 1-3x14mm CQT® is a revolutionary optical sight for tactical firearms such as the AR-15 and M16. Developed in cooperation with both the U.S. military and law enforcement agencies, the Leupold CQT combines the strengths of a red dot sight and a variable power riflescope. Incredibly tough, 100% waterproof, and devastatingly accurate, only the Leupold CQT is ready and able to handle the variety of close-contact situations common to both law enforcement and the military.