Meprolight M21 2016 Model ‘OPEN X’ Reticle Dot 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 in the world. Search out: ‘Meprolight torture test’ on Youtube for proof. Battle proven and trusted to the Israeli Special Forces. Open X Reticle: -In my opinion, 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 ready 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 a bunch in stock). About the Vortex 3X Magnifier w/ Flip To The Side Mount & With a FREE Magpul Goodie -Vortex Eternally Warranty-Brand New in Factory packaging.-3X magnification-New in Cellophane-Feel free to ask any questions.-Waterproof 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 everything for LIFE!! Thanks again! Buyer also receives a free Magpul gift with purchase of any Meprolight Optic (Offer does not apply to New York and Connecticut residents). We have the most productive return policy in the business. You run this thing over with a truck and we will be able to do a free return on it! “You do not love it, You do not pay for it”. No questions asked. As a favor to me, in case you have a feedback score under 10, please call me at (866-SLADE-ST, EXT 1) to say hello, and so I will verify that you’re a human. Thanks again!