Leupold Mark 4HD 2.5–10×42 Rifle Scope M5C3 FFP Illuminated TMR Reticle
Features
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4:1 Zoom Ratio: Integrated throw-lever for rapid transitions between 2.5× (wide field) and 10× (precision).
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First-Focal-Plane TMR Reticle: Glass-etched Tactical Milling Reticle (MIL-rad) calibrated for range estimation and wind holds, illuminated via red LED with seven daylight-bright settings.
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M5C3 Turret System: Exposed elevation dial with 0.1 MIL clicks (5 MIL/rev + 3 MIL over-travel); windage under low-profile ZeroLock® cap with 0.1 MIL clicks.
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25-Yard Side Focus: Quick-set parallax adjustment from 25 yd to infinity ensures tack-sharp reticle alignment.
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Electronic Reticle Level & MST™: Reticle-level indicator flashes if unlevel; Motion Sensor Technology auto-powers illumination on movement and off after ~5 min of inactivity.
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Professional-Grade Optics: Fully multi-coated lenses and prisms (Xtended Twilight® system) deliver unmatched light transmission, contrast, and edge-to-edge clarity.
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Rugged Construction: CNC-machined 30 mm 6061-T6 aluminum; IPX7 waterproof, nitrogen-purged, and rated to absorb .50 BMG recoil.
Technical Specifications for Leupold Mark 4HD 2.5–10×42 Rifle Scope M5C3 FFP Illuminated TMR Reticle
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Specification
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Details
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Model / MPN
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183738
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SKU
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183738
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UPC
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030317036744
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Magnification
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2.5 × ⇄ 10 ×
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Objective Lens Diameter
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42 mm
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Tube Diameter
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30 mm
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Reticle
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Illuminated FFP TMR (MIL-rad)
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Illumination Settings
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7 daylight-bright levels
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Elevation Adjustment
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M5C3; 0.1 MIL/click; 5 MIL per rev + 3 MIL over-travel
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Windage Adjustment
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0.1 MIL/click under ZeroLock® cap; ±25 MIL total
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Parallax Focus
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Side focus, 25 yd – ∞
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Eye Relief
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3.6″ – 3.9″ (94 – 99 mm)
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Field of View @ 100 yd
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42.2 ft (low) ⇄ 11 ft (high)
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Overall Length
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9.4″ (239 mm)
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Weight
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13.1 oz (371 g)
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Housing Material / Finish
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6061-T6 aluminum; matte-black hard-coat anodize
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Waterproof / Fogproof
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Yes (IPX7)
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Shock Resistance
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Rated to withstand .50 BMG recoil
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Included Accessories
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Integrated magnification throw-lever
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ZeroLock® windage cap
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Flip-up lens covers
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User manual
SEO Keywords
Leupold Mark 4HD 183738, 2.5–10×42 FFP TMR scope, M5C3 illuminated riflescope, side-focus MST optic.
