Precision Optics: Leupold 183623 Mark 4HD 4.5-18x52 Riflescope with FFP IlluminationThe Leupold Mark 4HD 4.5-18x52 riflescope (34mm) with M1C3 turrets and a first focal plane (FFP) illuminated PR1-MOA reticle 183623 is a premium optic known for its crystal-clear optics and precision. With a versatile 4.5-18x magnification range, side focus, and illuminated reticle, Leupold 183623 excels in various shooting conditions. The 34mm main tube enhances durability, and the M1C3 turrets provide precise and repeatable adjustments, making it a preferred choice for long-range shooting and tactical applications..yellow-box p {font-size:16px}.special-tab {color: #FFFFFF}The Leupold Mark 4HD 4.5-18x52 riflescope stands out for its exceptional clarity and precision. With a versatile 4.5-18x magnification and a large 52mm objective lens, it delivers clear and detailed images. Known for its rugged construction, this scope is built for durability in challenging conditions. Advanced coatings enhance light transmission, ensuring a bright sight picture even in low-light settings. Featuring Mil-based adjustments and a side-focus parallax adjustment, it is a preferred choice for long-range shooters, hunters, and tactical applications. The Mark 4HD 4.5-18x52 exemplifies Leupold's commitment to top-notch optics for optimal accuracy. Leupold's Mark 4HD Riflescopes offer lightweight durability and exceptional optical quality. With variations like 1-4.5x24mm, 2.5-10x24mm, 4.5-18x52mm, 6-24x52mm, and 8-32x56mm, and a range of reticle options, they suit diverse applications. Choose between M5C3 or M1C3 ZeroLock Adjustment turrets for precise adjustments. The Professional Grade Optical System ensures clarity in harsh light, and illuminated versions feature an electronic reticle level and Motion Sensor Technology. These Leupold Mark 4HD Riflescopes are built to last, with advanced internal features resisting extreme conditions for a lifetime of crystal-clear performance. Elevate your shooting with the versatile and durable Mark 4HD Riflescopes from Leupold. Features of the Mark4 HD Riflescopes: Available in 1-4.5x24mm, 2.5-10x24mm, 4.5-18x52mm, 6-24x52mm, and 8-32x56mm variationsM5C3 & M1C3 ZeroLock Adjustment Turrets: Both options feature visual and tactile indicators so you don’t lose track of your travel, and the ZeroLock feature prevents unintentional adjustments and ensures an accurate return to zeroProfessional Grade Optical System: ensures industry-leading glare reduction for a clear image even in harsh direct light, and the resolution and clarity that professional shooters demand in the fieldElectronic Reticle Level: Flashes when the scope isn’t level to improve accuracy in long range shots as well as simplifying the mounting process (ILLUMINATED VERSIONS ONLY)Motion Sensor Technology (MST): Extends battery life by automatically deactivating illuminated reticles after five minutes of inactivity and then reactivates instantly as soon as movement is detected (ILLUMINATED VERSIONS ONLY)Waterproof, fog proof, shock proof Leupold Mark 4HD 4.5-18x52 (34mm) M1C3 Side Focus FFP Illum. PR1-MOA Riflescope 183623