The Trijicon 1-8×28 VCOG (Variable Combat Optical Gunsight) is a highly rugged variable magnification riflescope designed for close quarter battle (CQB) and long distance marksmanship. With a forged aircraft-grade 7075-T6 aluminum housing the VCOG is nearly indestructible. Superior glass provides exceptional clarity and color with zero distortion. The universal segmented circle/MOA crosshair dot reticle is designed for multi-platform use accommodating multiple calibers ammunition weights and barrel lengths. The first focal plane reticle allows subtensions and drops to remain true at any magnification allowing the shooter to quickly and accurately apply the correct hold. With ruggedized electronics the LED reticle is robust enough for any application. Powered by a lithium AA battery (provided) the 1-8×28 VCOG offers a battery life of 633 hours at setting 6. Choose from 11 user-selectable brightness settings 2 night vision settings 8 day settings and 1 super-bright setting. An integrated dial fin allows easy rotation through the magnification range and a near-constant eye relief means no head or stock position adjustments are needed. Waterproof to 20 meters (66 ft.). – The Trijicon VCOG Mount w/ Q-LOC Technology features a Mil-Spec drop test rated 6061-T6 aluminum design with an easy to use one handed tool less mounting system. The spring-loaded design allows for constant retention and maintaining of zero even if the knobs are not tightened. – The mount boasts a low weight and low profile design with superior return to zero performance and is compatible with any Mil-Spec or NATO Picatinny rail. – Matte black anodized finish – Made in the USA – Length x Width x Height: 10.8 in x 2.8 in x 3.3 in (274.32mm x 71.12mm x 83.82mm) – Weight: 28.9 oz. (819.3g) – Magnification: 1-8x – Objective Size: 28mm – Reticle Pattern: Segmented Circle / Crosshair – Day Reticle Color: Red – Night Reticle Color: Red – Focal Plane: First – Bullet Drop Compensating (BDC): No – Caliber: MOA – Bindon Aiming Concept (BAC): Yes – Illumination Source: LED – Illumination Settings: 11 Total Settings: 2 Night Vision 8 Day and 1 Super-Bright Setting – Power Source: AA Lithium or Alkaline Battery – Battery Life: 633 hours (26.4 days) at setting 6 – Adjustment: 1/4 MOA Per Click – Adjustment Range: 120 MOA Total Travel (20 MOA per revolution) – Eye Relief: 4 in.-3.9 in. (101.6mm-99.06mm) – Exit Pupil: 0.40 in.-0.14 in. (10.16mm-3.56mm) – Field of View (degrees): 20°-2.5° – Field of View (feet): 109.2 ft.-13.1 ft. @ 100 yds. (36.4-4.37m @ 100m) – Mount: Quick-Release Mount with Trijicon Q-LOC Technology – Housing Material: 7075-T6 forged aluminum – Finish: Matte Black – Submersion Depth: 66 ft. (20m)