Leupold Mark 4HD 4.5-18x52 M5C3 Side Focus FFP PR2-MIL riflescope

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Rifle scope · 4.5–18x52 · FFP
Leupold Mark 4HD 4.5-18x52 M5C3 Side Focus FFP PR2-MIL
The Leupold Mark 4HD 4.5-18x52 M5C3 Side Focus FFP PR2-MIL is a rifle scope with 4.5–18x52 magnification, a 34 mm main tube, and a PR2-MIL reticle. The reticle is in the first focal plane and scales with changes in magnification.

At the range, when target distances vary, the upper magnification range helps you identify small target details precisely. First, make sure you have a steady rest and a consistent head position; higher magnification won't compensate for an unstable shooting position.
Check before buying


Ring diameter: 34 mm. Rings must have exactly this inner diameter; tightening them more won't compensate for a different tube size.

Reticle and controls: PR2-MIL, FFP – first focal plane. 0.1 MIL per click.

Clearance on the rifle: 52 mm objective lens. Also check the outer housing diameter, ring height, and clearance above the barrel.

Parallax: Side focus, from approx. 22.9 m.

Our assessment
With this configuration, the combination of PR2-MIL, FFP – first focal plane, and 0.1 MIL per click is what matters. The non-illuminated version doesn't need a battery for the reticle.

A good fit if: You're looking for 4.5–18x52, PR2-MIL, and a reticle that scales with magnification for a matched reticle-and-turret setup.
Not ideal if: You want a particularly low starting magnification; in that case, compare a lower magnification range.

What the features mean in use
With PR2-MIL in the first focal plane, the focus is on using the reticle markings consistently. When shooting at...
Check the unit of adjustment and reticle in the instructions and documentation, and don’t use values from a similarly named variant.
Skipping reticle illumination means no battery checks. What matters is whether you can see the chosen reticle clearly enough against your typical background.
Instructor/user tip: With the PR2-MIL reticle, use the same reference point in the target image at low and high magnification. The first focal plane makes the visible reticle grow with magnification; check which setting still lets you see the fine markings clearly.
Limits and mounting
The tube diameter confirms only one mounting requirement. Also check the interface, mounting height, clearance for the objective and eyepiece, and eye relief in your usual shooting position. Rings or a complete mount are not automatically included with the scope. Don’t use torque values from other models.
Safety: Never look at the sun or intense light sources through the optic. Have the mounting and eye relief professionally checked according to the original instructions.
Comparison and useful additions

Compare this version with the Leupold Mark 4HD 2.5-10x42 M1C3 FFP PR1-MOA riflescope. The 2.5–10x42 optic offers a different magnification range; it’s an alternative if a lower starting magnification matters more than high maximum magnification.
For a mounting comparison, see Leupold PRW2 34mm Medium Matte riflescope rings. Tube diameter alone doesn’t guarantee a fit: the interface, mounting height, and eye relief must also be suitable.
Find more versions in the Leupold selection; mechanical options in Mounts and Rings.

Technical specifications

Magnification: 4.5–18x

Objective lens: 52 mm

Main tube: 34 mm

Reticle: PR2-MIL

Focal plane: FFP – first focal plane

Elevation adjustment: M5C3

Parallax: Side focus, from approx. 22.9 m

Reticle illumination: No

Adjustment per click: 0.1 MIL

Length: 370.8 mm

Product weight: approx. 780 g

Eye relief according to the manufacturer: 91.4 / 99.1 mm at low / high magnification

Included
Leupold Mark 4HD 4.5-18x52 M5C3 Side Focus FFP PR2-MIL riflescope in the described configuration. The appropriate mount must be selected separately. No other packaging contents are specified here.
FAQ
Which rings do I need? The required ring diameter is 34 mm. The mounting height and interface must also match your setup.
Is the reticle illuminated? No, this version is not illuminated.
How does the reticle behave when magnifying? It visibly grows in the first focal plane.
Does it have side focus? Side focus, from approx. 22.9 m.
Is a mount included? No, the described delivery is the riflescope. Check the mechanical requirements before selecting a separate mount.
What distinguishes this version? PR2-MIL, FFP – first focal plane, and 0.1 MIL per click are the key combination. Don’t apply these specifications to similarly named models.