** PLEASE USE CODE LEUPOLD200 FOR THIS ITEM **
Leupold Mark 4HD Rifle Scope 6 24X Magnification 52mm Objective 34mm Main Tube Diameter Illuminated PR2 MOA Reticle Matte Finish Black First Focal Plane 183848 UPC 030317036684
Product Description
The Leupold® Mark 4HD 6-24x52mm M1C3 FFP Illuminated PR2-MOA Riflescope (SKU: 183848 / UPC: 030317036684) represents a modern evolution in long-range precision tactical optics, combining the rugged legacy of the legendary Mark 4 series with Leupold's latest optical technologies. Engineered specifically for precision rifle competitors (PRS/NRL), long-range hunters, and tactical precision marksmen, this 4:1 zoom optic bridges the gap between lightweight field carry and benchrest tracking accuracy, delivering exceptional edge-to-edge optical resolution across extreme target distances.
At its core, the Mark 4HD utilizes Leupold’s Professional-Grade Optical System, engineered to maximize light transmission during the critical dawn and dusk hours, neutralize harsh glare in midday sun, and deliver elite color fidelity. The glass-etched PR2-MOA reticle sits in the First Focal Plane (FFP), ensuring all subtension measurements, bullet-drop holdovers, and moving-target wind leads remain 100% proportionally true at every power setting between 6x and 24x. The reticle is powered by push-button illumination featuring Motion Sensor Technology (MST™), which automatically enters sleep mode after five minutes of stillness and activates instantly upon weapon movement to ensure endless field readiness.
Precision tracking is governed by the heavy-duty M1C3 ZeroLock® elevation dial, which offers precise 1/4 MOA click values and three full revolutions of elevation adjustment with an intuitive revolution indicator. Constructed from solid aircraft-grade 6061-T6 aluminum around a heavy-duty 34mm maintube, the Mark 4HD delivers superior internal erector spring travel and structural rigidity. The scope is sealed, argon/krypton gas-purged for absolute fogproof and waterproof performance, and finished in a non-reflective matte black anodizing that resists environmental corrosion, harsh field abrasion, and chemical cleaning solvents.
*Armorer Bench Notes & Real-World Staging Guidance:*
Fitment Matrix: Requires 34mm scope rings or a 34mm one-piece cantilever/chassis mount (such as Badger Ordnance Condition One, Spuhr, or Leupold Mark 4 rings). With a 52mm objective lens bell, medium-to-high ring height (1.10" to 1.54" depending on barrel contour and rail cant) is required to clear heavy varmint/MTU barrels and flat-top continuous rail receivers. Torque specs: Torque 34mm scope ring caps evenly to 15–18 in-lbs (do NOT exceed 18 in-lbs). Base cross-bolts to receiver rail should be torqued to manufacturer specifications (typically 45–65 in-lbs).
- Ensure the host rifle is completely clear, magazine removed, and chamber visually and physically verified empty.
- Mount your 34mm base or lower ring saddles to the receiver rail, pushing forward toward the muzzle to seat the crossbolts against the recoil lugs, and torque to specification.
- Place the Mark 4HD into the lower cradles, establish eye relief (3.7" to 3.9"), and adjust the ocular diopter to bring the PR2-MOA reticle into crisp focus against a blank background.
- Level the scope using a precision bubble level or plumb line, install the top ring caps, and torque T15 screws in an alternating X-pattern to 15–18 in-lbs while maintaining equal left and right gaps.
- Zero at 100 yards, loosen the three M1C3 turret set screws with the provided hex key, index the dial back to the zero hash mark, and re-tighten to lock in your true physical zero stop.
Key Features
- First Focal Plane (FFP) PR2-MOA Reticle: Reticle subtensions expand and contract with zoom, keeping holdovers and ranging calculations true at all powers.
- Professional-Grade Optical System: Delivers unmatched light transmission, extreme glare reduction, and edge-to-edge optical resolution.
- M1C3 ZeroLock® Elevation Dial: Provides 3 full revolutions of travel (1/4 MOA clicks) with a tactile revolution indicator and positive zero stop.
- Motion Sensor Technology (MST™): Extends battery runtime by deactivating illumination after 5 minutes of stillness and awakening upon motion.
- 34mm Maintube Chassis: Aircraft-grade aluminum one-piece body provides maximum structural strength and 75+ MOA of internal adjustment.
- Side Focus Parallax Adjustment: Fine-tunes parallax error and sharpens image focus from 25 yards out to infinity.
- Push-Button Reticle Illumination: Easily cycle through multiple daylight and low-light intensity levels with tactile button controls.
- Removable Zoom Throw Lever: Includes a thread-in magnification throw lever and filler plug for rapid power adjustments in competition.
- 100% Waterproof & Fogproof: Argon/krypton purged and O-ring sealed to withstand severe thermal shock and complete submersion.
- Made in the USA: Proudly designed, machined, and hand-assembled in Beaverton, Oregon, backed by Leupold's Full Lifetime Guarantee.
Product Specifications
- Brand: Leupold®
- Model/Series: Mark 4HD 6-24x52mm M1C3 FFP
- MPN / SKU: 183848 / 183848
- UPC: 030317036684
- Magnification Range: 6x – 24x
- Objective Lens Diameter: 52mm
- Maintube Diameter: 34mm
- Focal Plane: First Focal Plane (FFP)
- Reticle: PR2-MOA (Illuminated Red)
- Elevation Adjustment Type: M1C3 ZeroLock® Dial
- Click Value: 1/4 MOA (0.25 MOA)
- Total Elevation Travel: 75 MOA
- Total Windage Travel: 60 MOA
- Parallax Adjustment: Side Focus (25 Yards to Infinity)
- Eye Relief: 3.7 – 3.9 Inches (94 – 99 mm)
- Linear FOV @ 100 Yards: 17.5 ft (at 6x) – 4.4 ft (at 24x)
- Power Source: 1x CR2032 3V Lithium Battery (Included)
- Overall Length: 14.6 Inches (371 mm)
- Chassis Material: 6061-T6 Aircraft-Grade Aluminum
- Finish/Color: Matte Black Anodized
- Country of Origin: United States
