Leupold Mark 4HD 2.5-10x42 FFP Rifle Scope - M5C3, TMR, 183740

The Leupold Mark 4HD 2.5-10x42 FFP Rifle Scope - M5C3, TMR, 183740 is built for shooters who want first focal plane precision, MIL-based adjustments, and a versatile magnification range that works across a wide range of field and tactical applications. Its 2.5-10x configuration offers a strong balance of speed at lower power and added precision when more magnification is needed.

Built with Leupold’s Professional-Grade Optical System, this riflescope delivers strong light transmission, glare reduction, and the clarity serious shooters expect in demanding conditions. The TMR reticle remains accurate throughout the magnification range, while the M5C3 adjustment system provides precise 0.1 MIL clicks and repeatable dialing performance.

Compare magnification ranges and features across our Leupold Mark 4HD rifle scope lineup.

Best Uses

• Precision shooting with MIL-based adjustments
• Field and tactical rifle setups
• Shooters who want first focal plane reticle accuracy
• Mid-range to extended-range engagements

Key Features

• Professional-Grade Optical System - Delivers excellent light transmission, glare reduction, and image clarity
• Integrated Throw Lever - Allows quick magnification changes in dynamic shooting scenarios
• Custom BDC Dial Compatible - Supports a custom ballistic dial matched to your load
• ZeroLock Dial - Helps prevent accidental turret movement and secures your zero
• Zero Stop - Allows a quick return to your established zero after dialing
• First Focal Plane - Keeps reticle subtensions accurate at every magnification setting
• Waterproof, Fogproof, & Shockproof - Built for reliability in harsh environments and hard use

Why This Riflescope Stands Out

This Mark 4HD configuration stands out for shooters who want a compact first focal plane optic with dependable MIL-based dialing. The TMR reticle supports accurate holdovers throughout the zoom range, while the M5C3 ZeroLock adjustment system adds confidence when dialing for distance. Its balanced magnification range makes it a practical option for both range work and field use.

Choosing the right adjustment system can improve your long-range performance. Our MOA vs MRAD reticle guide explains how each system works.

Specifications

• Finish: Matte
• Reticle: FFP TMR
• Magnification: 2.5-10x
• Objective Lens: 42mm
• Field of View @ 100 yds: 42.2-11 ft
• Click Value: 0.1 MIL
• Elevation Adjustment Range: 24.7 MIL
• Windage Adjustment Range: 24.7 MIL
• Eye Relief: 3.6-3.9 in
• Parallax: Fixed @ 150 yds
• Length: 12.5 in
• Weight: 21 oz
• Tube Size: 30mm

To complete your setup, pair this scope with dependable scope rings and bases for a secure mounting system. You can also explore Leupold accessories including lens covers, tools, and other gear designed to support your optic.

Proper mounting helps maximize accuracy and consistency. Our scope ring height guide can help you choose the correct setup for your rifle and optic combination.

Frequently Asked Questions

What is the benefit of a first focal plane reticle?
A first focal plane reticle keeps holdovers and subtensions accurate at every magnification setting, which is valuable for precision shooting and ranging.

Does this scope use MIL adjustments?
Yes, this model uses 0.1 MIL click adjustments with 24.7 MIL of elevation and windage adjustment range.

Is this scope built for field and tactical use?
Yes, its compact size, durable construction, and versatile magnification range make it a strong fit for both field and tactical applications.