Vortex VMX – 3T Magnifier with Flip Mount Simple. Quick. Effective. The push-button design of the VMX-3T engages and disengages the flip-mount, permitting the magnifier to lock in place. The result? 3X amplified or unmagnified views on demand. Optics are completely multi-coated for optimal light transmission. Light-weight and tough … hard-coat-anodized, machined-aluminum building guarantees resilience. Inside nitrogen purged for trustworthy waterproof/ fogproof efficiency. Ultimate amplified adaptability for practically any AR-height red dot sight. Enables lower 1/3 or outright co-witness mounting heights and is ideal for shooters who wish to enhance the efficient variety of their red dot sight. Totally multi-coated lenses increase light transmission with numerous anti-reflective finishes on all air-to-glass surfaces; Waterproof O-ring seals prevent moisture, dust, and debris from entering the tube for reliable performance in all environments; Fogproof barrels are filled with nitrogen gas to hinder internal fogging; Matte black finish hard-coat anodized for sturdiness; 1-3X magnification; 3 1/4″ eye relief; F.O.V. is 38.2′ @ 100 lawns; 30mm tube size; 4.3″l.; 11.9 ozs. Order yours today! CAUTION: This product can not be shipped to Canada. Please inspect your State, County and City laws for limitations before purchasing this product. Vortex VMX-3T Magnifier with Flip Mount.