Holosun HS510C & HM3X Magnifier Combo

The Holosun HS510C & HM3X Magnifier Combo creates a flexible rifle sighting system that transitions quickly between an unmagnified reflex sight and a clear 3X view. Pairing the wide-window HS510C with Holosun’s flip-to-side HM3X magnifier gives carbines, pistol-caliber carbines, and shotguns the speed needed for close targets while improving target identification and aiming precision at greater distances.

The HS510C uses Holosun’s Red Multi-Reticle System, allowing the shooter to select a precise 2 MOA dot, a fast-acquisition 65 MOA circle, or the combined circle-dot reticle. The open reflex window provides an expansive sight picture for rapid transitions and both-eyes-open shooting, while a titanium protective hood reinforces the aluminum optic housing against impacts and demanding use.

Solar Failsafe supplements the CR2032 battery with ambient light and supports automatic reticle-brightness adjustment as conditions change. Shake Awake conserves battery life by placing the sight into standby during inactivity and restoring the previous setting when movement is detected. Ten daylight and two night-vision-compatible brightness settings provide clear reticle visibility across changing environments.

The included HM3X delivers fixed 3X optical magnification with a 7-degree field of view and 2.75 inches of eye relief. An adjustable ±3 diopter allows the image to be focused for the shooter’s eyesight, while integrated windage and elevation controls align the magnifier’s field of view with the HS510C reticle.

An ambidextrous flip-to-side mechanism allows the magnifier to move out of the sight line when an unmagnified view is preferred. Both the HS510C and HM3X use quick-detach Picatinny mounts for fast installation and removal. The magnifier also includes a riser spacer, allowing alignment with absolute co-witness or lower 1/3-height optics.

The HS510C operates at a 1.41-inch absolute co-witness height in its standard configuration. The included HM3X spacer supports lower 1/3 alignment when the HS510C is used with a compatible riser, giving the system room to adapt as the rifle setup changes.

With IP67 environmental protection on both components, durable aluminum construction, multi-coated optical glass, and a combined 1X-to-3X capability, the Holosun HS510C and HM3X Combo is well suited to general-purpose carbines, competition PCCs, defensive rifles, and range builds that need speed without giving up magnified observation.

Holosun HS510C Features

• Open reflex rifle sight with a wide viewing window
• Red Multi-Reticle System
• Selectable 2 MOA dot, 65 MOA circle, or combined circle-dot reticle
• 650nm Red Super LED
• Up to 50,000 hours of battery life at setting six
• Solar Failsafe technology
• Shake Awake motion activation
• Automatic and manual brightness adjustment
• Ten daylight and two night-vision-compatible brightness settings
• Memory function retains the previous setting
• Lockout Mode helps prevent accidental setting changes
• Side-loading CR2032 battery tray
• Aluminum housing with titanium protective hood
• Integrated quick-detach Picatinny mount
• 1.41-inch absolute co-witness optical height
• Multi-coated lens
• True 1X magnification
• Unlimited eye relief
• Parallax-free design
• IP67 environmental protection
• 5,000G vibration rating

Holosun HM3X Features

• Fixed 3X optical magnification
• Ambidextrous flip-to-side mechanism
• Quick-detach Picatinny mount
• Included spacer supports absolute and lower 1/3 co-witness heights
• 2.75-inch eye relief
• 7-degree field of view
• ±3 diopter adjustment
• Adjustable windage and elevation for optic alignment
• Optical-glass lenses
• Nitrogen-purged housing helps prevent internal fogging
• Durable aluminum construction
• Micro-arc oxidation finish
• IP67 environmental protection
• 1,000G vibration rating

HS510C Optical and Electronic Specifications

• Reticle color: Red
• Wavelength: 650nm
• Reticle: 2 MOA dot and 65 MOA circle
• Magnification: 1X
• Window size: 0.91″ x 1.26″
• Battery type: CR2032
• Battery life: Up to 50,000 hours at setting six
• Brightness settings: 10 daylight and 2 night vision
• Adjustment per click: 0.5 MOA
• Windage and elevation travel: ±50 MOA

HM3X Optical Specifications

• Magnification: 3X
• Eye relief: 70mm / 2.75″
• Field of view: 7 degrees
• Exit pupil: 7.6mm
• Diopter adjustment: ±3D
• Light transmission: 75%
• Lens material: Optical glass
• Adjustment per click: 0.5 MOA
• Windage and elevation travel: ±50 MOA

Physical Specifications

• HS510C housing: Aluminum with titanium protective hood
• HS510C dimensions: 3.3″ x 1.68″ x 1.78″
• HS510C weight: 4.94 oz
• HS510C mount height: 1.41″ absolute co-witness
• HM3X housing: Aluminum
• HM3X dimensions: 4″ x 1.7″ x 2.5″
• HM3X weight: 9.8 oz
• Mounting interface: Picatinny rail
• Finish: Black micro-arc oxidation

Included Components

• Holosun HS510C red Multi-Reticle reflex sight
• Holosun HM3X 3X magnifier
• HS510C integrated quick-detach Picatinny mount
• HM3X flip-to-side quick-detach mount
• HM3X lower 1/3 riser spacer
• CR2032 battery
• Multi-tool
• Lens cloth
• User manuals
• Warranty documentation

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