What size scope rings do I need to mount the Leupold Mark 5HD 5-25x56mm to my rifle?

This riflescope features a robust 35mm main tube diameter, which means it requires dedicated 35mm scope rings or mounting systems rather than standard 1 inch or 30mm rings. It is engineered to handle heavy-recoil action while remaining relatively lightweight at 850.5 grams (30 ounces).

How does the First Focal Plane Tremor 3 reticle assist with long-range shooting?

The illuminated Red Tremor 3 reticle sits in the First Focal Plane, meaning the hash marks and windage holdovers scale dynamically with your magnification from 5x to 25x. This allows you to easily estimate range and perform fast holdovers at any magnification setting without doing complex math.

Does this Leupold riflescope require any special electrical certifications or adapters for the Australian market?

As a precision optical device, the Mark 5HD is an analog instrument that does not connect to mains power and is exempt from Australian 240V and EESS RCM/SAA compliance requirements. The only internal power source required is a standard CR2032 button battery to power the illuminated reticle.

How do the M5C3 turrets function for elevation adjustments?

The M5C3 low-profile zero-lock turrets offer up to 30 MILs of total elevation adjustment in precise 0.1 MIL counter-clockwise click values. The integrated ZeroLock button prevents accidental rotation in the field while providing a solid, physical return-to-zero stop.

Long Range Riflescope - Leupold LE171777

The Leupold Mark 5HD 5-25x56mm M5C3 FFP Illuminated Tremor 3 (Model LE171777 / Part #171777) is a professional-grade precision riflescope engineered for long-range accuracy and robust field performance. Built around a 35mm main tube, this high-performance optic features a First Focal Plane (FFP) illuminated Tremor 3 reticle that scales dynamically with its 5x to 25x magnification range. Weighing 30 ounces (850.5 grams), it delivers a lighter physical profile than many comparable scopes in its class, reducing physical strain during extended field carry. Designed to withstand heavy-recoil action, the scope integrates Leupold's professional-grade optical system to maximize light transmission and maintain edge-to-edge clarity in demanding environments.

Key Features

First Focal Plane (FFP) Tremor 3 Reticle: Reticle hash marks and windage holdovers scale with the magnification level, allowing for accurate range estimation and rapid holdovers at any zoom setting.
M5C3 ZeroLock Turrets: Provides a low-profile, three-revolution dial offering up to 30 MIL of elevation adjustment in precise 0.1 MIL clicks, complete with a physical return-to-zero stop to prevent accidental rotation.
Motion Sensor Technology (MST™): Automatically deactivates the reticle illumination after 5 minutes of inactivity to preserve battery life, instantly reactivating upon movement detection.
Advanced Optical System: Optimized for elite glare reduction in harsh daylight and outstanding light transmission under challenging lighting conditions.
Environmental Resilience: Sealed and internal gas-purged for complete waterproof and fogproof performance, suited to handle extreme Australian temperature transitions from the freezing alpine zones of the Snowy Mountains to the high-heat outback.

Technical Specifications

Magnification Range: 5x to 25x (5:1 zoom ratio)
Objective Lens Diameter: 56 mm
Main Tube Diameter: 35 mm (requires 35mm scope rings)
Illuminated Reticle: Red Tremor 3 (First Focal Plane)
Overall Length: 15.67 inches (approximately 39.8 cm)
Weight: 30 ounces (850.5 grams)
Eye Relief: 3.6 to 3.8 inches (9.1 cm to 9.7 cm)
Field of View (at 100 yards): 20.4 feet at 5x; 4.2 feet at 25x
Elevation Adjustment Range: 35 MIL (120 MOA)
Windage Adjustment Range: 17 MIL (60 MOA)
Parallax Adjustment: Side Focus, 50 yards (approx. 45.7 metres) to infinity
Power Source: Powered by one CR2032 button battery (easily sourced in Australia; no external electrical safety approvals or mains power required)

Who It Is For

The Leupold Mark 5HD 5-25x56 is designed for precision shooters who require repeatable accuracy over long distances. It is highly suited for Australian Precision Rifle Series (PRS) competitors, extreme long-range (ELR) shooting enthusiasts, and professional pest controllers operating in remote environments. The lightweight 30-ounce build also makes it a practical option for long-range hunters who need to traverse rugged terrain on foot without carrying excess weight.

SKU	LD38906LP
Model #	LE171777
Brand	Leupold
Shipping Weight	1.0000kg

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Leupold Mark 5hd Riflescope Le171777 5-25x56 Ffp Tremor 3

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