ACOG 3.5x35 scope with Red Crosshair Reticle: the ranging reticle is calibrated for 5.56 (.223 cal) flat-top rifles to 1000 meters. Includes Flat Top Adapter. Daytime illumination is provided by fiber optics and Tritium illuminates the scopes at night. The TA11-D-100557 combines the technology of the 3.5x35 Trijicon ACOG gun sight with the 3.25 MOA Trijicon RMR Type 2 red dot sight. This provides the shooter with the option of quick acquisition close range sighting with the Trijicon RMR Type 2 sight and the precision for longer range shooting with the Trijicon ACOG 3.5x35.#html-body [data-pb-style="62DF8289A0197"]{justify-content: flex-start; display: flex; flex-direction: column; background-position: left top; background-size: cover; background-repeat: no-repeat; background-attachment: scroll; border-style: none; border-width: 1px; border-radius: 0px; margin: 0px 0px 10px; padding: 10px;}#html-body [data-pb-style="62DF8289A01A3"]{border-style: none; border-width: 1px; border-radius: 0px; margin: 0px; padding: 0px;}