Feyachi M38 5X Red Dot Magnifier with Flip to Left Side Mount Focus AdjustmentAbout this item 5X ZoomFeyachi Magnifier adds 5X magnification to a standard red dot scope and can be zoomed by twisting the eyepieceand maintains an expansive field of view with comfortable 2. 4 inches eye relief. High DefinitionFully multicoated clear glass for sharp sight picture, ensure good resolution, enhanced light gathering capabilities, and provide solid color fidelity. Field of View AdjustmentThe adjustable eyepiece provides a fast focus