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Leupold Mark 4HD 2.5-10×42 M5C3 FFP Riflescope – Illuminated TMR Reticle

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Leupold Mark 4HD 2.5-10×42 M5C3 FFP Riflescope – Illuminated TMR Reticle

Ready your rifles with a versatile Leupold Mark 4HD 2.5-10×42. Leupold took the legendary performance of its predecessors and gave it a slimmer maintube that’s been packed full of professional-grade features. Whether you’re a dedicated enthusiast or a seasoned expert, the Mark 4HD’s optical clarity and lightweight design will get the job done at the range or in the field.
The Leupold Mark 4HD series features five magnification ranges, providing you with an accurate and reliable option for close-quarter engagements, long-range dominance, and everything in between. They’re available with a three-turn elevation dial for unmatched confidence at extreme distances, a precise ZeroLock windage adjustment that won’t budge when knocked around, and a side focus that delivers tack-sharp images as close as 25 yards. And like all Leupold riflescopes, they’re waterproof, fogproof, and backed by Leupold’s lifetime guarantee.

Leupold Mark 4HD 2.5-10×42 Features

4:1 Zoom Ratio

A 4:1 zoom ratio strikes the perfect balance between weight and versatility, giving you plenty of magnification options without weighing you down. Model magnification ranges are available in powers of 4x: 1-4.5, 2.5-10, 4.5-18, and 8-32.

Professional Grade Optical System

Leupold’s Professional-Grade Optical System offers unmatched light transmission that’s designed to outperform in the most challenging lighting conditions, industry-leading glare reduction for a clear image in harsh, direct light, and the resolution and clarity that professional guides and shooters demand in the field.

Motion Sensor Technology (MST)

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.

Removable Throw Lever

The removable, low-profile throw lever makes changing magnifications quick and easy. It includes a thread protector plug to use when the lever is removed.

Waterproof, Fogproof & Shockproof

Leupold pioneered modern waterproof and fogproof technology using advanced internal gasses and sealing methods that withstand extreme temperatures, elevation changes, and shocks, so the internals of the optics stay moisture free and crystal clear for life.

ZeroLock Dial

The ZeroLock system eliminates accidental dial movement by locking it in place.


The ZeroStop system creates a backstop when returning the dial back to zero, so you don’t accidently turn the dial a full revolution in the wrong direction.

Electronic Reticle Level

The Electronic Reticle will flash when the scope isn’t level, promoting more accurate long-range shots. It can also simplify the mounting process.


This scopes comes with an illuminated reticle, which can help you get on target faster in low-light situations.

Custom Dial Compatible

Leupold’s Custom Dial System (CDS) gives you the ability to customize your turret (adjustment dial) to your exact ballistics and environmental conditions. Once your new custom dial is installed, simply range the target, turn the dial to that number, and aim dead on.

Night Vision Compatible Illumination

Micro-adjustable illumination brightness settings support modern night vision devices and can be fine-tuned to your equipment’s sensitivity.

M5C3 ZeroLock Adjustments

These low-profile dials are available on select models and provide up to 30-MILs of adjustment in 3 revolutions and 0.1 MIL clicks. Visual and tactile revolution indicators ensure you don’t get lost in the travel. The ZeroLock feature prevents inadvertent adjustments and ensures accurate return to zero.

Product Manual

Illuminated TMR Reticle

Expands on existing MIL Dot reticle design

Uses hash marks instead of dots for increased ranging and holdover precision

Provides aiming points for both wind and bullet drop compensation

1 MIL is approximately 3.6 inches at 100 yards

Hash marks are spaced 0.5 MIL apart, transitioning to 0.2 MIL spacing on the outer edges

Not caliber specific

Front (first) focal plane

MIL based systems are the current military standard


Battery Type CR2032
BDC Dial Included No
Daylight Bright Illumination No
Custom Dial System (CDS) No
Elevation Adjustment Type M5C3
Guard-ion Lens Coating No
Locking Dial Yes
Magnification Type Variable
Reticle Focal Plane First Focal Plane
Revolution Indicator Yes
Reticle Illum. TMR
Rezero Type Set Screw
Reticle Type First Focal Plane
Adjustable Objective No
Side Focus No
Switch Type Push Button
Windage Adjustment Type Capped
Weight (oz) 21.5
Elevation Adjustment Value per Click 0.1Mil
Elevation Adjustment Range (MOA) 85
Elevation Adjustment Range (MIL) 24.7
Elevation Adjustment Range (cm @ 100m) 247
Elevation Adjustment Per Revolution 10 MIL
Elevation Dial Travel Limit 30MIL
Windage Adjustment Value per Click 0.1Mil
Windage Adjustment Range (MOA) 85
Windage Adjustment Range (MIL) 24.7
Windage Adjustment Range (cm @ 100m) 247
Windage Adjustment Per Revolution 10 MIL
Magnification Max 10
Magnification Min 2.5
Objective Lens Diameter (mm) 42
Linear FOV Low Mag (ft@100yds) 42.2
Linear FOV High Mag (ft@100yds) 11
Angular FOV Low Mag (Degrees) 8
Angular FOV High Mag (Degrees) 2.1
Eye Relief Low Mag (in) 3.6
Eye Relief High Mag (in) 3.9
Fixed Parallax-Free Distance (yd) 150
Battery Life (hr), Low Intensity 1600
Battery Life (hr), Medium Intensity 1000
Battery Life (hr), High Intensity 300
Number of Illum Settings 8



Total Length (in) – A 12.5
B Total Mounting Space (in) – B 6
C Front Mounting Space (in) – C 1.7
D Rear Mounting Space (in) – D 2
E Eyepiece Length (in) – E 3.3
F Objective Length (in) – F 3.3
G Objective Diameter (in) – G 2
H Eyepiece Diameter (in) – H 1.8
K Maintube Diameter (mm/in) – K 30 mm




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