The QLMT-Compact is a throw lever that can easily be attached to the magnification ring of the Osprey CP3-9×42 scopes, making running up or down the magnification a snap, especially in cold weather conditions when the shooter is wearing gloves. The QLMT-Tactical can be attached to the magnification ring of Osprey’s TA4-16×50, TA6-24×50, and TA10-40×50 scopes. They are backed by Osprey’s industry leading no-nonsense lifetime warranty.