Trijicons ACOG series was built to the exact specifications of the U.S. Special Operations Command for use by all elite U.S. forces. Tritium/fiber-optic illuminated reticle automatically adjusts the brightness without batteries. Rugged military-grade forged 7075-T6 aircraft aluminum alloy. Multicoated lenses provide superior clarity and light-gathering capabilities with zero distortion. Shock-resistant. Dry-nitrogen filled for fog-free performance. Large eye volume for quick short- range target acquisition. Broadband anti-reflective lenses. Manufacturers limited lifetime warranty. Made in USA. Available: TA01NSN Trijicons most popular ACOG model. Ranging reticle allows for bullet-drop compensation out to 600 meters without any manual adjustment. Reticle appears black in day and glows amber in the dark. 4x32 with an amber crosshair reticle pattern and .223 calibration. TA31RCO-M150CP 4x32 USMC Rifle Combat Optic with red chevron reticle and Target Reference. TA11H-G 3.5x35 scope with green horseshoe .223 ballistic reticle with TA51 mount. TA11J-G 3.5x35 scope with green crosshair .223 ballistic reticle with TA51 mount. TA31F 4x32 scope with red chevron .223 ballistic reticle wand TA51 mount. TA32RCO-M4 4x32 BAC Rifle Combat Optic with red chevron reticle for the USMC M4 and M4A1 with thumbscrew mount. TA31F-G 4x32 scope with green chevron .223 ballistic retical and TA51 flat-top mount. Cancer and Reproductive Harm- www.P65Warnings.ca.gov.