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Holosun

Holosun HM3X 3x Flip Magnifier with Picatinny-Style Lower 1/3 Co-Witness Mount Matte

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

3x Magnifier

Aluminum body and matte black

Quick-release, Ambidextrous

Flip-to-side mount included

Supports Absolute

Lower 1/3 co-witness mounting solutions

2.75-inch Eye

Relief for optic setup flexibility

Ip67 Certified

Water resistance for wet conditions

$199.99
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SKU: HM3X-605930625271

Overview

Built for shooters who want a simple way to extend the reach of a compatible optic, this 3x magnifier adds a flip-to-side option for situations where close-in viewing and magnified aiming both matter. It includes quick-release, ambidextrous mounting and supports Absolute and Lower 1/3 co-witness setups, making it suited to rifles configured for flexible optic use. The aluminum body, matte black finish, and IP67 water resistance give it a practical, no-nonsense profile for hard use in the field or at the range. Windage and elevation adjustment are included for precision zeroing, while the 2.75-inch eye relief is an important consideration when setting up the sight picture.

Why Hunters Choose the Holosun

3x Magnification

For added target detail behind

Quick-release, Ambidextrous

Flip-to-side mount for fast transitions

Includes Absolute

Lower 1/3 co-witness mounting solutions

2.75-inch Eye

Relief supports comfortable viewing setup

Ip67 Certified

Water resistance for use in

Key Features

  • 3x magnifier with aluminum body and matte black finish.
  • Quick-release, ambidextrous flip-to-side mount included.
  • Supports Absolute and Lower 1/3 co-witness mounting solutions.
  • 2.75-inch eye relief for optic setup flexibility.
  • IP67 certified water resistance for wet conditions.
  • Windage and elevation adjustment for precision zeroing.

Best Used For

  • Hunters using a red dot who want quick flip-to-side magnification for closer and mid-range target identification.
  • Shooter setups needing both Absolute and Lower 1/3 co-witness mounting options without changing optics.
  • Users who prefer a quick-release, ambidextrous magnifier for flexible rifle handling on the range or in the field.
  • Hunters operating in wet conditions who want IP67-certified water resistance in a compact optic accessory.

Specifications

Blade FinishMatte Black
Co Witness Mounting SolutionsAbsolute and Lower 1/3
Elevation AdjustmentYes
Exit Pupil Diameter0.29 Inches
Eye Relief2.75 Inches
Field Of View37 Feet
Housing MaterialAluminum
Included MountsYes
Magnification3
Mount TypeQuick release, ambidextrous, flip-to-side mount
Water ResistanceIP67 certified
WaterproofYes
Windage AdjustmentYes

Pros

  • 3x magnification for added target detail behind a compatible optic
  • Quick-release, ambidextrous flip-to-side mount for fast transitions
  • Includes Absolute and Lower 1/3 co-witness mounting solutions
  • 2.75-inch eye relief supports comfortable viewing setup
  • IP67 certified water resistance for use in wet conditions
  • Windage and elevation adjustments allow precision zeroing

Considerations & Trade-offs

  • This is a 3x magnifier, so it adds magnification rather than replacing a primary optic; that makes it a more specialized setup choice than a standalone sight.
  • The 2.75" eye relief is relatively short, so proper head position and rifle setup matter for a clear sight picture.
  • The flip-to-side mount is quick and ambidextrous, but it still adds hardware and weight to the rifle compared with running an unmagnified optic alone.
  • It includes Absolute and Lower 1/3 co-witness mounting solutions, so compatibility depends on how your existing optic and setup are configured.

Suggested Comparisons

  • Red dot magnifiers
  • Flip-to-side optic mounts
  • Co-witness mounting solutions
  • Compact rifle optics accessories

Suggested Accessories

  • Picatinny optic mount
  • Lens cleaning kit
  • Protective optic cover
  • Thread locker

Frequently Asked Questions

What magnification does the HM3X provide?

The HM3X is a 3x magnifier.

What mounting options are included with this magnifier?

It includes a quick-release, ambidextrous flip-to-side mount with Absolute and Lower 1/3 Co-witness mounting solutions.

Is the HM3X suitable for wet conditions?

The product data lists it as IP67 certified water resistant and waterproof.

How much eye relief does it offer?

The listed eye relief is 2.75 inches.

What materials and finish are specified?

The housing material is aluminum, and the finish is matte black.