ACOG 4x32 - Red Horseshoe Dot .223 Ballistic w/TA51Manufacture ID: TA31HACOG 4x32 Scope with Red Horseshoe BAC Reticle-includes Flattop Adapter. Features dual illumination (Fiber optics provides daylight illumination and tritium illuminates reticle at night). The ranging reticle is calibrated for 5.56 (.223 cal.) flattop rifles out to 800 meters.The TA31H also includes: - 1 Flattop Mount- 1 4x32 Scopecoat- 1 Lens Pen- 1 Lanyard Assembly for Adjuster Caps- 1 Trijicon Logo Sticker- 1 ACOG Manual- 1 Warranty Card Specifications: - Magnification: 4x - Objective Size: 32mm - Bullet Drop Compensator: Yes - Length: 5.80" - Weight: 9.9 oz. without mount - Illumination Source: Fiber Optics & Tritium - Reticle Pattern: Horseshoe with Target Reference System - Day Reticle Color: Red - Night Reticle Color: Red - Calibration: 0.223 - Bindon Aiming Concept: Yes - Eye Relief: 1.50" - Exit Pupil: 8.00mm - Field of View (degrees): 7.00 - Field of View at 100 yards: 36.80' - Adjustment at 100 yards (clicks/in): 3 - Tube Size: N/A - Mount: TA51 - Mount On/Comes With: Flattop - Housing Material: Forged Aluminum