The 3x Slide-to-Side Tactical Magnifier from Sightmark provides the shooter with the ability to have optional 3x magnification while using a red dot type rifle sight. To allow you to move it in and out of the view quickly and easily, this magnifier features a slide-to-side quick-release mount. It also features multi-coated optics, a long eye relief, and 5° angular field of view. The aluminum housing is weather-resistant, fogproof, resistant to shock, and can be securely mounted on a picatinny or a weaver mount. Magnifier will be shipped in secured packaging to ensure safe delivery. Item is in good, USED condition.