Meprolight M21 2016 Model Bullseye Reticle Fiber-Optic Reflex Sight w/ Vortex Magnifier The Meprolight M21 includes the integral throw-lever Mount, Co-witness riser, Tenebrex Lens Cap, and neoprene scope-coat. Literally the toughest optics on this planet. Search out: ‘Meprolight torture test’ on Youtube for proof. Battle proven and trusted to the Israeli Special Forces. Bullseye Reticle: -Personally, the toughest brand of optic on planet earth.-Used by Military and Law Enforcement by the Israeli Special Forces. -Night vision Compatable.-Threaded Tenebrex objective lens cover included (to conceal shooters position)-Fiber optic light collector for day use, and tritium element for night time use.-Your weapon is At all times able to go, no ‘ON’ switch. -Includes integral windage and elevation cap retainers-‘At all times On’ battery of arms assures your optic is At all times turned on (No batteries)-Brand New in Box (We have now a bunch in stock). Concerning the Vortex 3X Magnifier w/ Flip To The Side Mount & With a FREE Magpul Goodie -Vortex Endlessly Warranty-Brand New in Factory packaging.-3X magnification-New in Cellophane-Feel free to ask any questions.-Water resistant and nitrogen purged.-Flip mount for better eye relief and easier piggybacking of BUIS.-Milled aircraft-grade housing w/integral Flip to the side picatinny mount.-Simply the most productive sub-$400 Magnifier on planet earth.-Flip Up Sights will lower 1/3 Cowitness with the Red Dot Reticle-We warranty the whole thing for LIFE!! Thanks again!