Brand: TrijiconModel/Series: Acog 4×32 Bac Riflescope -.223/5.56 Bdc Red Donut ReticleLength x Width x Height: 5.93 in x 2 in x 2.3 inWeight: 10.9 oz. (309.01g)Magnification: 4xObjective Size: 32mmReticle Pattern: DonutDay Reticle Color: RedNight Reticle Color: RedBullet Drop Compensating (BDC): YesCaliber: .223 / 5.56Bindon Aiming Concept™ (BAC): YesIllumination Source: Fiber Optics & TritiumPower Source: Fiber Optics & TritiumAdjustment: 2 clicks per in. @100 yardsEye Relief: 1.5 in. (38.1mm)Exit Pupil: 0.32 in. (8.13mm)Field of View (degrees): 7°Field of View (feet): 36.8 ft. @ 100 yds. (12.27m @ 100m)Mount: M16 / AR15 Carry Handle BaseHousing Material: Forged AluminumFinish: Matte Black