Leupold Mark 4HD 4.5-18X52 M5C3 FFP Riflescope - PR2-MIL

MSRP: $1,463.92
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Leupold Mark 4HD 4.5-18X52 M5C3


First Focal Plane - PR2-MIL FFP  Reticle

Building on the legacy of the workhorse Mark 4 series and based on the the scopes chosen by SOCOM, the Leupold Mark 4HD provides discerning shooters a lightweight and durable optic for any precision shooting need. 

The Leupold Mark 4HD 4.5-18X52 Riflescope provides a good balance of performance, versatility and useful features, while eliminating some of the needs of the battlefield, which tend to bog down the economics of many tactical scopes that are used for competition and law enforcement. This scope, part of Leupold's elite tactical line, is designed for sharp clarity and reliable performance under the most demanding conditions. Featuring M5C3 ZeroLock Adjustments and a first focal plane PR2-MIL reticle, it's tailored for accuracy across a wide range of shooting disciplines.

Challenges in long-range shooting often stem from the inability of scopes to maintain precision across variable distances and conditions. The Mark 4HD addresses this by combining cutting-edge optical engineering with robust mechanical systems, delivering improved accuracy and reliability over the older Mark 4 line.

Features and Benefits:

  • First Focal Plane PR2-MIL Reticle: Ensures consistent reticle size at all magnifications, facilitating accurate ranging and shot placement.
  • M5C3 ZeroLock® Adjustments: Provide precise, tactile 0.1 MIL clicks with up to 30-MILs of adjustment in 3 revolutions, ensuring accurate adjustments and preventing inadvertent changes.
  • Professional-Grade Optical System: Maximizes light transmission, reduces glare in harsh lighting, and delivers the clarity demanded by professional shooters.
  • Versatile Magnification (4.5-18X): Accommodates a wide array of shooting situations, from close quarters to long-range engagements.
  • Side Focus: Adjusts parallax for a clearer reticle, enhancing accuracy at different ranges.
  • 4X Zoom Factor:  Keeping the zoom factor to a smaller number allows the manufacturer to concentrate on quality materials and peformance for a more limited focal length, zeroing-in on the optics that matter and not overbuilding to accomodate larger and more complicated zoom ratios that add cost

Manufacturer's Part Number:  183626

The Leupold Mark 4HD is engineered for clarity and precision. The HD lenses counteract light dispersion and heighten image sharpness, providing immaculate clarity. The scope's M5C3 turrets are integral for maintaining shot accuracy over time and varied environmental conditions, offering definitive feedback and precise adjustments. The PR2-MIL reticle in the first focal plane ensures the reticle scales with the target at all magnification levels, crucial for accurate ranging and shot placement, making the Mark 4HD a reliable tool for dynamic shooting scenarios.

The Mark 4HD provides more contrast and edge-to-edge clarity. The M5C3 ZeroLock turrets allow for windage and elevation to be adjusted in 0.1-mil increments with visible and tactile indicators. 

Parallax focus is a side knob that is easy to use, and the scope tracks predictably with a precise return to zero. The 4:1 zoom ratio allows a good balance. Less and the shooter feels lacking. More, and the engineering starts to get difficult to maintain image quality without a large cost increase. The eyepiece is adjusted with a simple turn, while power adjustments are fast using the integrated throw lever. The 34mm main tube allows the user to pick from a broad range of mount options from many manufacturers.

Comparative Insights:

  • Versus Older Mark 4 Models: The Mark 4HD introduces advancements in optical clarity, turret precision, and a more streamlined maintube packed with professional-grade features.
  • Versus Mark 5HD: The Mark 5HD, with its 35mm tube, represents Leupold's top-tier offering with best-in-class coatings and military-grade durability. In contrast, the Mark 4HD, with its 34mm tube, provides a balance of performance and versatility, suitable for a wide range of applications. The Mark 4HD's coatings and construction are designed to meet the needs of both professional and recreational users, offering high performance in a variety of conditions.  Also, you will notice that the objective lens size is 52mm.  For a mid-range scope, 42x to 50x is the standard.  In this scope, the 52mm is larger, and results in better light transmission and image clarity.  For the higher magnication scopes, the 52mm is still the maxium.  Finally, there is a cost to the manufactuer in every step up in zoom factor to keep the consistency of image correct.  By limiting the zoom factor to 4:1, Leupold achieves some cost savings and while still fielding a wide range for a mid-range magnification scope (4.5-18x).

PR2-MIL Reticle Highlights

  • An open center with fine aiming dot prevents obscuring the target at long range
  • Uses hash marks instead of dots for increased ranging and holdover precision
  • Provides aiming points for both wind and bullet drop compensation
  • Hash marks are spaced 0.25 MIL apart
  • Not caliber specific
  • Front (first) focal plane
  • MIL based systems are the current military standard

Leupold PR2-MIL reticle


Magnification 4.5-18X
Objective Lens Diameter 52mm
Reticle PR2-MIL (First Focal Plane)
Tube Diameter 34mm
Adjustment Click Value 0.1 MIL (M5C3 ZeroLock®)
Elevation Adjustment Range   Up to 30-MILs in 3 revolutions
Parallax Adjustment Side Focus
Weight 27 ounces