Magnification: 4x<br />- Objective lens diameter: 32mm<br />- Bullet Drop Compensator: yes<br />- Scope length: 5.80 inches<br />- Weight: 400g<br />- Illumination Source: Fiber Optics<br />- Reticle Pattern: Crosshair<br />- Day Reticle Color: Red/Green<br />- Night Reticle Color: Black<br />- Eye Relief: 1.5<br />- Exit Pupil: 8 <br />- Field of View (Degrees): 7<br />- Field of View @ 100 yards (ft): 36.8<br />- Housing Material: Aluminum<br />- Weight (oz): 9.9 w/o mount <br />- Reticle Pattern: Horseshoe w/ Target Reference System <br />- Calibration: 0.223 (TA31H)， 6.8 SPC (TA31H-68)  <br />- Adjustment @ 100 yds (clicks/in): 3.0 <br /> <br />Features:<br />- Aluminum Alloy Housing - Forged 7075-T6 aluminum alloy housing provides for a nearly indestructible sighting system <br />- Bindon Aiming Concept (BAC) - equipped with BAC allow use of the both-eyes-open aiming method along with scope magnification sighting for rapid target acquisition - in any light <br />- Longer Eye-Relief - Maximum eye-relief for larger caliber rifles and large exit pupil for faster target acquisition  <br />- Fiber Optics - Automatically adjusts the brightness level and contrast of the reticle to available light conditions <br />- Totally Battery-Free - ACOG delivers increased hit potential in all lighting conditions - without the use of failure-prone batteries <br />- Broad Band Anti-Reflective Coated Lenses - Multi-coated lenses provide superior clarity and light gathering capabilities with zero distortion <br />