Instantly bump up the magnification of your Machine Gun Reflex Sight by 3x using the Trijicon MGRS MAG 3x Magnifier. This magnifying optic can be instantly flipped in and out of the line of sight on-demand using the optional mount. It allows you to shift from near to faraway targets and make laser-sharp placements without delay. The waterproof and fogproof device offers a 4.9° field of view, bright and clear fully multi-coated lenses, and a 2.5" eye relief. Made of durable and lightweight 7075-T6 aluminum, it is a suitable companion for your gun sight in the battlefield, while only adding 5.6 ounces of weight to your gear.