The Holosun HM3X Micro is a 3X magnifier built for streamlined rifle setups, with flip-to-side QD mounting and a compact aluminum body (Holosun part no. HM3X-MICRO). It delivers true 3X magnification through optical glass, with a 7 degree field of view and 67 mm of eye relief that stays forgiving across shooting positions. Standard and cantilever flip-to-side mounts are included, and a spacer lets it work with both absolute and lower 1/3 co-witness red dot heights. Holosun nitrogen-purges the housing so it resists fogging, and at 8.47 ounces it keeps a carbine balanced. It is a practical way to add reach behind a red dot sight without swapping optics.

Key Specifications

• Magnification is 3X through optical glass, which improves target identification at extended distances.
• The field of view is 7 degrees, wide enough to keep situational awareness and make fast transitions between targets.
• Eye relief is 67 mm, forgiving enough for comfortable shooting across varied positions.
• The exit pupil is 7.1 mm, which keeps the image bright and easy to find behind the sight.
• Diopter adjustment covers plus or minus 3, so you can fine tune focus to your own eyesight.
• Mounting is a flip-to-side QD system with both standard and cantilever mounts included, and it attaches directly to a Picatinny rail.
• It is compatible with absolute and lower 1/3 co-witness heights, and the included spacer handles the lower setting.
• The housing is 7075-T6 aluminum with a black MAO finish, rugged metal construction that keeps weight down.
• Sealing is nitrogen purged with an IP67 rating, protecting against fogging, water and dust.
• The magnifier weighs 8.47 ounces, which preserves the balance and handling of a modern carbine.

Frequently Asked Questions

What comes in the box with the HM3X Micro? The box includes the magnifier, a lower 1/3 spacer, a lens cloth, a multi-tool, the manual and a warranty card, along with the standard and cantilever flip-to-side mounts.

Does it work with different red dot heights? Yes. It is compatible with both absolute and lower 1/3 co-witness optic heights, and the included spacer covers the lower 1/3 setup.

How big is the HM3X Micro? The body measures 2.76 by 2.44 by 1.81 inches and weighs 8.47 ounces, so it adds very little bulk to a carbine.

Buy the Holosun HM3X Micro 3X Ultra Compact Magnifier, Flip-to-Side QD Mount

A magnifier should disappear into the rifle until the moment you flip it into place. Order the HM3X Micro from our Lubbock, Texas gun shop for fast shipping, and see more sight magnifiers while you are here.