The AR Optics Transition 3X Magnifier enhances your primary optic with 3X magnification and convenient flip-to-side mount functionality for rapid target engagement transitions.AR Optics Transition 3X Magnifier with Flip-to-Side Mount3X magnification for extended range precision25mm objective lens for clear light transmission3.35 inch eye relief for comfortable shootingFlip-to-side mount allows instant magnification on/offDurable black finish constructionWeighs 13.0 oz for balanced setupIdeal for tactical applications hunting and precision shooting where variable magnification capability is essential for engaging targets at multiple distances.