Designed specifically for law enforcement and military applications, the Trijicon ACOG 3x30 (Advanced Combat Optical Gunsight) riflescope offers the right combination of ample magnification, low light capability and long eye relief for users who need fast target identification and maximum situational awareness. Equipped with Trijicon's Bindon Aiming Concept (BAC) feature, the ACOG 3x30 allows users to keep both eyes open while engaging targets. The Trijicon Compact ACOG 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. Product Features Most ACOG models are battery free, featuring a tritium/fiber optic illuminated reticle that automatically adjusts the brightness based on available light. Several ACOG models are designed with a user adjustable brightness setting powered by a single AA battery. The 3.5x35 LED and 4x32 LED models both offer six adjustable brightness settings. Fixed-power design allows for minimal moving parts to create a nearly indestructible sighting system. Both eyes open shooting using Trijicons Bindon Aiming Concept (BAC) feature allows for improved situational awareness. The quality of the glass and multi-coated lenses maximize light-gathering capabilities and clear field of view with zero distortion. Most ACOG models feature a bullet drop compensating and target-ranging reticle for decisive aiming. No other magnified optic has been used more in combat than the ACOG. Proven to withstand recoil from a .22LR to a .50BMG and everything in between. Easily passes U.S. Military drop test requirements. Exceptional waterproof performance that exceeds military standards. Dry nitrogen-filled to eliminate fogging. This optic is tested to withstand and perform in extreme cold and heat with dry-nitrogen filled housing that mitigates fogging. Product Specifications Length x Width x Height: 6.2 in x 2.2 in x 2.6 in (157.48mm x 55.88mm x 66.04mm) Magnification: 3x Reticle Pattern: Crosshair Night Reticle Color: Green Caliber: 300BLK 115 / 220gr. Illumination Source: Fiber Optics & Tritium Adjustment: 0.25 MOA per click Exit Pupil: 0.33 in. (8.38mm) Field of View (feet): 19.3 ft. @ 100 yds. (6.43m @ 100m) Housing Material: Forged Aluminum Weight: 9.8 oz. (277.83g) Objective Size: 30mm Day Reticle Color: Green Bullet Drop Compensating (BDC): Yes Bindon Aiming Concept (BAC): Yes Power Source: Fiber Optics & Tritium Eye Relief: 1.9 in. (48.26mm) Field of View (degrees): 3.7 Mount: Trijicon Q-LOC Technology Mount Finish: Matte Black