Specifically calibrated for the .223, the Sightmark Core TX 4x32 .223 BDC Riflescope sets the standard when taking close-medium range shots. Perfect for tactical operations, competition, target or hunting, the core TX 4x32 riflescope features exposed, pop-up, locking turrets to prevent loss of zero. It features a fixed 4x magnification and a fine-etched bullet-drop-compensating (BDC) reticle, including adjustable Red and green illumination, makes target acquisition faster and easier, even in low-light conditions. Hard-anodized, matte black, 6061-T6 aircraft-grade aluminum construction and advanced, fully multi-coated glass provides the same uncompromising quality and image performance demanding shooters have come to expect from Sightmark. Ready to handle your extreme environments, the Sightmark Core TX 4x32 .223 riflescope is nitrogen-filled, waterproof, fogproof, dustproof and shockproof.