The Vortex VMX-3T gives users the option of magnified and unmagnified shooting at the push of a button. For close range shots, simply hit the push button to disengage the lock and the VMX-3T flips off to the side. For longer ranges, the VMX-3T can be quickly engaged and provides 3x magnification with amble light transmission. The Vortex VMX-3T is compatible with virtually any AR-height red dot sight and allows for 1/3 or absolute co-witness mounting heights. Features of the Vortex VMX-3T3x magnification Multiple anti-reflective coatingsRapid engage and disengagement Multi-coated lensesIncluded AccessoriesFlip Mount (Absolute Co-Witness)Shim Plate (Lower 1/3 Co-Witness)(2) Sets of ScrewsLens Cloth Vortex Optics Vortex VMX3 Magnifier VMX-3T