Eotech 512A65/1 NSN 1240-01-554-4488 The Model 512 is the most popular model HWS. This tactical optic is perfect for agencies that want the best in CQB speed and versatility, without the need for night vision compatibility. AA Battery model (supports Lithium and Alkaline) 65 MOA circle with 1 MOA aiming dot reticle pattern Includes rugged aluminum hood assembly and knobbed, tool-less mounting bolt Interfaces to 1" Picatinny (MIL-STD-1913) rail The Eotech 512 Holographic sight is Eotech's non-night vision compatible, "AA" battery powered model. It is the same as the 552 Eotech sight but without the night vision compatibility. The Eotech 512 and all other Eotech Holographic Diffraction Sights are the most advanced weapon sighting system in the world. Utilizing a holographic lens similar to the heads up display used in military fighter aircraft. The Eotech 512 sight has a 1 MOA red dot for precision work as well as a 65 MOA circle for close quarter shooting. The Eotech 512 sight has 20 brightness settings allowing it to work in either bright sunlight or very low light. The aiming dot is even visible if the lens is broken. When used in Close Quarter Battle(CQB) environments, this revolutionary optic delivers peripheral vision, and leaves no muzzle side operator signature. It is covered with an allow hood for extreme durability. It can be removed without tools and works on any weaver/Picatinny rail. Operation Optics: Transmission holography - parallax free Magnification: 1x Eye Relief: Unlimited Length/Width/Height: 5"x1.8"x2.25" (131x49x60 mm) Weight: 11.5 oz (326 grams) Temperature: -40 to 150 F (using AA lithiums); -20 to 140 F (all other battery choices) Waterproof: Submersible to 10 ft depth Sealing: Fogproof internal optics Color/Finish: Non reflective black with hard coat finish Adjustment (per click): 0.5 MOA (1/2" at 100 yds) Adjustment Range: +/- 40 MOA travel Mount: 1" Picatinny (MIL-STD-1913) rail Return to Zero: Repeatable to 1 MOA after re-mounting Heads-Up-Display Window Optical Surfaces: Anti-glare coating Window Dimensions: 1.20" x 0.85" (30 x 23mm) Front Window Material: 1/8" solid glass Rear Window Material: Shatter resistant laminate (3/16" thick) Field of View (100 yds): 30 yds (28m) at a 4" eye relief Standard Reticle: 65MOA circle with quadrant ticks with 1 MOA aiming dot Electrical Brightness Adjustment Range: 110,000:1 brightest to lowest No Night Vision Compatibility Power Source: 2x 1.5V AA batteries (supports lithium, alkaline, or rechargeable) Battery Life: 1,000 continuous hours (lithium) at nominal setting 12; 600 continuous with AA alkaline Brightness Settings: 20 settings with scrolling feature Auto Battery Check Indicator: Flashing reticle upon start-up Auto Shut-down: At 8 hrs- programmable to 4 hrs