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Leupold

Leupold Mark 3HD M5C3 Rifle Scope 30mm Tube 6-18x 50mm 1/10 Mil Adjustments TMR Reticle

Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.

6-18x Variable

Magnification for flexible target acquisition

50mm Objective

Lens and 30mm tube diameter

1/10 Mil

Adjustment click value with exposed

Zero Stop

Resettable-to-zero turret features

Tmr Holdover

Reticle in the second focal

$679.99
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SKU: 180671-030317028640

Overview

Built for shooters who want a practical long-range optic with MIL-based controls, this scope pairs 6-18x magnification with a 50mm objective and a 30mm tube for a versatile setup on the rifle. The exposed elevation dial, finger-adjustable turrets, zero stop, and resettable-to-zero design support deliberate dialing, while the side focus and fast-focus eyepiece help with quick setup in the field or on the range. Its TMR holdover reticle and 2nd focal plane layout make it a straightforward option for tactical use and precision work, though it does not include an illuminated reticle. Matte-finished, waterproof, fog proof, and shock proof, it is positioned for hunters and shooters who value dependable adjustment features over unnecessary complexity.

Why Hunters Choose the Leupold

6-18x Magnification

Supports flexible use across varied

50mm Objective

Lens helps gather more light

30mm Tube

Solid platform for MIL-based adjustment

1/10 Mil

Click adjustments allow precise elevation

Exposed Elevation

Dial, zero stop, and resettable

Key Features

  • 6-18x variable magnification for flexible target acquisition.
  • 50mm objective lens and 30mm tube diameter.
  • 1/10 MIL adjustment click value with exposed turrets.
  • Zero stop and resettable-to-zero turret features.
  • TMR holdover reticle in the second focal plane.
  • Side focus parallax adjustment with fast-focus eyepiece.

Best Used For

  • Precision-minded hunters and shooters dialing shots at extended ranges
  • Users who prefer MIL-based adjustments and exposed turret controls
  • Hunters needing a 6-18x scope for variable-distance target work
  • Shooters wanting a TMR reticle with side focus for careful holdovers

Specifications

Adjustment Click Value1/10 MIL
Adjustment TypeClick
Blade FinishMatte
Exposed TurretsYes
Fast Focus Eye PieceYes
Finger Adjustable TurretsYes
Fog ProofYes
Holdover ReticleYes
Illuminated ReticleNo
Lens CoatingFully Multi-Coated
Lens Covers IncludedNo
Maximum Power18
Minimum Power6
Overall Length14.6 in
Parallax AdjustmentSide Focus
Power VariabilityVariable
ReticleTMR
Reticle Focal Plane Location2nd
Rings IncludedNo
Shock ProofYes
Sun Shade IncludedNo
Tube Diameter30mm
Turret HeightHigh
Turrets Resettable To ZeroYes
WaterproofYes
Weight19.5 Ounce
Zero StopYes

Pros

  • 6-18x magnification supports flexible use across varied hunting distances.
  • 50mm objective lens helps gather more light for a brighter sight picture.
  • 30mm tube provides a solid platform for MIL-based adjustment system.
  • 1/10 MIL click adjustments allow precise elevation and windage changes.
  • Exposed elevation dial, zero stop, and resettable turrets simplify dialing corrections.
  • TMR holdover reticle and side focus support deliberate shot placement and parallax control.

Considerations & Trade-offs

  • The 6-18x range is geared toward mid- to longer-range work, so it is less suited to close-in, fast-moving shots than a lower-magnification optic.
  • The 50mm objective and 14.6-inch overall length make this a more substantial scope, which may matter for rifle balance and mounting setup.
  • This model uses a second focal plane reticle, so reticle subtensions do not scale with magnification the way they do on first focal plane designs.
  • Rings, sun shade, and lens covers are not included, so those accessories need to be sourced separately if desired.

Suggested Comparisons

  • Tactical rifle scopes
  • Long-range hunting scopes
  • MIL-based optic accessories
  • Variable-power rifle scopes

Suggested Accessories

  • Scope rings
  • Lens covers
  • Flip-up scope caps
  • Rifle scope mount

Frequently Asked Questions

What magnification range does this Mark 3HD model offer?

This scope has a variable magnification range of 6-18x.

What reticle does it use, and is it illuminated?

It uses a TMR reticle. The provided specifications list the illuminated reticle as No, even though the long description mentions an illuminated FireDot reticle with seven settings, so the source data is inconsistent on illumination.

What type of adjustments does it have?

It features MIL-based adjustments with 1/10 MIL click value, exposed turrets, finger-adjustable turrets, resettable-to-zero turrets, and a zero stop.

Is parallax adjustment included?

Yes. The specifications list side focus parallax adjustment.

What other key features are listed for this scope?

The source data lists a 30mm tube, 50mm objective, matte finish, fully multi-coated lenses, fast focus eyepiece, waterproof/fog proof/shock proof construction, and a 14.6-inch overall length.