7 Best Red Dot Magnifier - Ultimate Buyer's Guide

As the technology that can bends light and make scopes got better in recent years, more and more smaller size magnifier optics are released from various companies.

In this buyer's guide, let's review the top red dot magnifier optics. Some of people's favorites are:

Let's check out what we have below:

Best 3 & 4X Red Dot Magnifiers

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If you don't already have a red dot sight please Check out: badassoptic.com/best-red-dot-optics 

Sig Sauer JULIET4 - Best Overall

Sig red dot magnifier combo

  • Magnification 4x
  • Objective Lens Diameter 24 mm
  • Eye Relief 2.55 inches
  • Linear Field of View 38.2 feet @ 100 yds
  • Length 4.2 inches
  • Weight 12.5 oz

This is a solid side flip red dot magnifier offering from Sig Sauer Electro-Optics.

Many people are satisfied with this product for its price, looks, and performance.

Aim at long-distance targets 4 times better and retract it to the side when transitioning back to the red dot sight in no time.

Vortex Micro 3X - Most Compact

iwi x95 with holosun 510c
  • Magnification 3x
  • Objective Lens Diameter 22 mm
  • Eye Relief 2.64 inches
  • Linear Field of View 38.2 feet @ 100 yds
  • Angular Field of View 7.28 degrees
  • Length 2.9 inches
  • Weight 9.55 oz

Why pick Vortex Micro 3X is the compact version of the Vortex VMX 3T. It's a smaller and shorter optic features better eye relief, 28% more field of view, and a built in quick-release mount. 

The shooter can mount this neat little magnifier behind any red dot or holographic sights for a super compact configuration for shooting close up & mid range targets.

It also includes absolute & 1/3 co witness height mount to satisfy your specific cheekweld need.

The magnifier pivot mount also allows for right or left-handed use, so if you're looking for a compact magnifier scope the Vortex Micro 3X will not disappoint.

Read More: Detailed Vortex Micro 3X Review

  • Magnification 3x
  • Eye Relief 2.75 inches
  • Linear Field of View 37 feet @ 100 yds
  • Angular Field of View 7. degrees
  • Length 3.9 inches
  • Weight 11.6 oz

The HM3X is HoloSun's newest product for the best value. Fast transition from 3X magnification to 1X red dot seamlessly simply by flipping it to the side with a good detent.

Clear glass quality and generous 2.75 inches of eye relief are the best one out of all.

In addition, it's scope length is short, which won't take up much rail space.

EOTech G33 - Old School

EOTECH G33 with EXPS3 Trex Arm

Image Referenced TREX ARMS

  • Magnification 3.25x
  • Objective Lens Diameter 1"
  • Eye Relief 2.64 inches
  • Length 3.9 inches
  • Weight 11.9 oz
  • Side STS Mount 

EOTech is the oldest kid on the block. The G33 is one of the most popular magnifiers used both in the military and civilian world. For EOTech users, this is a no brainer perfect match combo.

Tool-free azimuth adjustment with adjustable diopter for eye focusing.

The side flip mechanism is smooth and rugged with adjustable tension on the locking lever to stay on the rifle as tight as possible.

Check out NEW EOTECH Brand Magnifiers

Primary Arms 3X LER Magnifier - Most Affordable

Primary Arm 3X magnifier with Aimpoint

Image Referenced Primary Arms

  • Magnification 3x
  • Objective Lens Diameter 24 mm
  • Eye Relief 2.64 inches
  • Linear Field of View 37.9 feet @ 100 yds
  • Weight 7.9 oz

The Primary Arms 3X magnifier is an affordable version of the Aimpoint. This 30mm tube scope works great and you don't have to spend over $170 for it.

The GEN IV has a longer 2.64 inches eye relief distance compared to the 2.2 inches on the Aimpoint 3X, which many people love.

Also with integrated diopter that provides fast focus ability to keep target image clear.

Rubber sleeve cover protects the body from harsh scratch and impact to last a long time outdoor.

Aimpoint 3X-C - Lightest Weight

Aimpoint 3x c magnifier
  • Magnification 3x
  • Eye Relief 2.2 inches
  • Angular Field of View 6 degrees
  • Length 4 inches
  • Weight 7.8 oz

A cheaper alternative option for the Aimpoint fans. The original Aimpoint 3X magnifier has discontinued in 2018 and it costs about $800, almost the price of a new rifle.

However, its made for the military, and it is built like a tank.

Added night vision capability for special operation usage, and for extended range target identification and engagement.

If you use the 30mm Aimpoint TwistMount, you can freely use it as a handheld monocular.

Best 6X Red Dot Magnifiers

Sig Sauer JULIET6 - Most Affordable 6X

Sig Sauer Juliet 6X magnifier
  • Magnification 6x
  • Objective Lens Diameter 24 mm
  • Eye Relief 2.3 inches
  • Angular Field of View 4 degrees
  • Length 5.4 inches
  • Weight 14.7 oz
  • QD PowerCam 90 Degree Flip Mount

Way more economical than getting the Aimpoint 6X for a magnifier exhibiting the same performance and quality.

Rugged PowerCam 90 mount for side flip sight transition or for quickly bring targets 6 times closer.

Built-in recoil lugs guarantee secure mounting on the hardest recoil rifles.

Why Use A Magnifier Scope

EOTECH EXPS2 with G33 Magnifier

Image Referenced GunMag Warehouse

A magnifier scope lets red dot sight user additional magnification for long-distance shots.

Generally speaking within 150 or 200 yards. This is the perfect setup for users who are 70 % of the time shooting up close and only 30 % of time engaging targets within 200 yards.

In addition, it helps the shooter see their enlarged BDC reticles better at medium ranges.

Unlike low power variable scope where it's designed for shooting up to 200 yards or beyond. Even at 1X isn't truly the same as shooting with a red dot optic.

You shooter has to completely align with the scope to prevent scope shadows.

Use Magnifier Scope To Zero Red Dot Sight Better

When zeroing a red dot sight even up to 25 yards, you can fine-tune the zero with a magnifier scope.

Often times people zero their 2 MOA size dot at 25 or 50 yards with a good group, then they call it good. What I suggest everyone does is zero the optic again with a magnifier scope and fine-tune your point of aim and point of impact.

Generally speaking, you can correct your zero up to +/- 3/8 " more accurate than without a magnifier.

Which Magnification Is The Best

Magnified Red Dot 4X

Note: Red dot doesn't increase in size when magnified, in fact, it helps refine the zero

Is there a big difference among 3X, 4X or a 6X scope?

Between 3X and 4X, there isn't a big difference. The most important thing is to know what distance do you typically shoot and pick the best one.

For red dot magnifier combo users, a 3-4X is a good pick for anything within 200 yards, where most of your targets are around 50 yards.

For anyone that shoot mostly targets beyond 150 yards or 250 yards, a 6X scope is a better choice. However, with the increased magnification also means an increase in scope length that can take up a lot of rail real estate.

Red Dot Sight & Magnifier Mount Height

One thing you must properly verify is the height of the two optics, they must align.

If the two optics are aligned, but the red dot is off-center in the magnifier view, then you need to center the magnifier to the zeroed dot.

Some magnifiers come to spacers you can add to your magnifier to lower or raise the height to align with the red dot sight, and some you can't.

Magnifier Scope Mount Options

Before you pick up a magnifier scope, make sure you know which mount you want.

There are fixed mounts, flip to side mounts or twist mounts.

Flip to the side mount is the most popular because you can basically tug the scope away if not needed, or flip it back when you need it.

Note: Make sure the mount allows you to switch mount direction in case you're a left-handed shooter, and you want it to flip to the left instead of to the right.