The Mark 3HD was built for any shooter who needs a rugged, precise, and repeatable MIL-based scope for their rifle. The 4-12x40mm model is ideal for mid to long-range shots, making it the perfect scope for nearly any rifle in your safe. Complete with MIL-based adjustments and reticles, HD performance, an exposed elevation adjustment dial, and a low-profile power selector with integrated throw lever, the Mark 3HD series is perfect for anyone who needs a rugged, precise, and repeatable scope. Built around Leupold's Elite Optical System, it offers the light transmission, glare reduction, and resolution that diehard hunters and shooters demand for all-day performance. The illuminated FireDot reticle with seven brightness settings and easy-to-use illumination dial will get you on target fast, even in harsh daylight.