The wide field of view, which is 30% bigger than other brand’s comparable models combined with its adjustable features, are what make the UTG 3X Magnifier With Flip-To-Side QD Mount Adjustable really stand out from the rest. The scope is precision machined and anodized for maximum strength and wear-resistance and has a broadband multi-coated lens to provide a crystal clear 3X image. The innovative flip-to-side mechanism lets you quickly transition between a 1X and 3X image. The scope also features an adjustable eyepiece for easy dioptric correction and will adjust for windage/elevation for optimum view centering. It has a 42mm center height for the most common dot sight combinations and a patented quick-detach lever lock mounting base. The UTG 3X Magnifier is completely sealed and nitrogen filled so that it is fog/weather proof.