Best Red Dot Sights For Glock MOS Handguns

Glock gen 4 mos optic mounting plates
Image Referenced On Target Magazine

Can you put a red dot on a Glock slide ? of course! and it’s much easier & cheaper now with the new MOS slide.

In this buyer’s guide, we share the best optics for Glock MOS handgun. Some of the top 4 are:

  • Holosun 508T or 507C
  • Trijicon RMR
  • Leupold DeltaPoint Pro
  • Vortex Razor

Out of all available options, the Trijicon RMR / SRO and Holosun HE508T are two best selling and most durable micro red dot for competition and defensive pistols Glocks,

The recommended list of micro red dots we have put together below range from best performance, best durability to the best for the money.

Let’s check them out…

Buy your first Glock MOS online here. If you don’t have one.


Best Optics For Glock MOS [All Models]




Best Use For: Competition, Tactical & Conceal 

  • Features:2 MOA dot (Red/Green), Grade 5 Titanuim housing, CR2032 Battery, 1 MOA/click adjustment
  • Benefits:Solar + battery power providing ~100K hours, Motion activated, Fully multi-coated lens, Upgrade from HS507C


Best Use For: Range, Competition & Tactical

  • Features:2.5 MOA dot, 7075 T6 Aluminum housing, Same as RMR mount base, 1 MOA / Click, Top loading CR2032 battery
  • Benefits:Large FOV for faster TGT acquisition, Slick top loading battery design without sight removal for battery swap



  • Features:3.5 MOA dot,  Enclosed 7075 T6 AL body, CR1225 Battery, 1 MOA/click adjustment
  • Benefits:Fully protected optic inside and out from dirt, mud and water, Ultimate durability same as Aimpoint Micro
  • Recommended Mount: Aimpoint ACRO Part 200520


Best Use For: Tactical & Range

  • Features:2.5 MOA dot,  CR2032 Battery, 1 MOA/click adjustment, Battery saving motion sensor
  • Benefits:Wide & Tall lens for fast TGT acquisition, Tool-less top loading battery access, Rugged construction


  • Features:6 MOA dot, 6061 T6 Aluminum housing, 10 brightness settings, 1 MOA / Click, Top loading CR1632 battery
  • Benefits:Large FOV for a micro optic, Works on rifle & shotgun as backup optic, Fast TGT acquisition for speed and accuracy, Slick top loading battery design without sight removal for battery swap


Best Use For: Range, Competition & Conceal 

  • Features:3 MOA reticle, Side button OPS, 1 MOA / Click, CR1632 battery
  • Benefits:Lightweight mirco optic for fast action shooting, Pinpoint accuracy with speed, Automatic brightness sensor to match environmental conditions

Holosun HE508T – Best Overall

Holosun HE508T on agency arms glock
Image Referenced SageDynamics

The Holosun HE508T is a solid Titanium made red dot optic for the Glock, which is about 30% tougher forged 7075 T6 aluminum optic

This means it’s significantly stronger than the old school Trijicon RMR.

Besides the beefy outer body construction, the optic also has the longest battery life up to 100,000 hours using a single CR2032 battery, which is 5.5X more than the Trijicon RMR.

In addition, the solar panel provides the optic with fail-safe battery source so it will always remain on.

But there is more…

The optic also feature Holosun’s Shake Awake technology, which activates the optic when it senses motion, and it turns off when remaining static. This feature saves battery juice even more and turns on based on the last setting recall.

Best for conceal carry because it’s the most durable optic, which also the width doesn’t stick out too much.

HOLOSUN HE508T-RD Red Dot Sight
51 Reviews
HOLOSUN HE508T-RD Red Dot Sight
  • Parallax free optical design, with unlimited eye relief.
  • Multi-reticle System.
  • Shake Awake technology with last setting recall.
  • Solar cell and high capacity battery provide dual power supplies.

Trijicon SRO – Best Large FOV Optic

Image Referenced @RKBarmory

Reviewing the Trijicon SRO against the original RMR showed us significant upgrades side by side.

The two biggest difference is the increased lens window size for better dot tracking & top-loading battery access.

It kept the same mounting and overall body dimension as the RMR, so you don’t have to modify anything to fit the Trijicon SRO if you’re already an RMR user.

The SRO really made a big difference in how frequently people can acquire the dot and align the sight picture without any problem. Even if the shooter slightly draws the gun off-center, he/she can still pick up the dot and not lose it during fast followup shots.

Lastly, the top-loading battery access allows the user to switch to a fresh battery without removing the sight, which saves energy and time finding the tool and to re-zero the dot.

It’s one best looking optic that also performs very well on the Glock…Highly recommend it.

Trijicon SRO Sight Adjustable LED 2.5 MOA Red Dot, Black
155 Reviews
Trijicon SRO Sight Adjustable LED 2.5 MOA Red Dot, Black
  • LARGE, UNOBSTRUCTIVE FIELD OF VIEW: Parallax-free and compatible with suppressor-height iron sights
  • CLEAR, CRISP DOT: Fine-tuned, illuminated reticle, coupled with exceptionally clear front lens, offers a clear sight picture with a crisp 2.5 MOA Red Dot
  • EASY, ADJUSTABLE WINDAGE & ELEVATION: Tool-less design makes zeroing hassle-free
  • RED DOT PISTOL READY: Designed to fit on many of the most popular red-dot-ready brands on the market (mount not included)

Leupold DeltaPoint Pro – Best Legacy Competition Handgun Optic

Glock with Leupold DeltaPoint Pro red dot
Image Referenced TREX ARMS

The DeltaPoint Pro has a slightly taller and wider lens than the Trijicon RMR, and it’s one of Leupold’s premium micro red dot optics. It’s designed for pistols, rifles, and shotguns

In addition, what we like about it is it’s first ever top-battery loading design, which doesn’t require tool for sight removal in order to switch to a fresh CR2032 battery. It’s a awesome design that has inspired other optics company to do the same.

For the longest time, the DeltaPoint Pro has been people’s favorite competition optic because it has a slightly wider lens window than the RMR. It’s durable and effective for placing the dot on targets to shoot at.

It’s mostly recommended for competition style shooting only for the reason that the it doesn’t have a quite user friendly reticle brightness adjustment system, which can be annoying for conceal carry users who just want to simply adjust the brightness relative to the lighting condition throughout their day.

Leupold DeltaPoint Pro Reflex Sight
250 Reviews
Leupold DeltaPoint Pro Reflex Sight
  • Model #119688 - DeltaPoint Pro with 2.5 MOA Dot reticle and Matte finish
  • Battery saving Motion Sensor Technology - Automatically deactivates illumination after 5 minutes of inactivity yet reacts instantly when movement is detected.
  • DiamondCoat Aspheric Lens increases the usable field of view by up to 56% and provides a scratch resistant crystal clear image.
  • Tool-less top loading battery access and true 1 MOA click adjustments provide unparalleled ease of use.

Aimpoint ACRO P-1 – Ultimate Weather Proof Optic

Glock 17 gen 4 with surefire x300 and Aimpoint ACRO P-1
Image Referenced Soldiersystems

The Aimpoint ACRO-1 is a unique optic that solves the problems that open emitter micro red dot couldn’t. It has the enclosed body design to deter dirt, water, mud, and other nasty stuff from getting into the optic.

Have you ever had stuff fall into the cup of those open emitter red dot when you conceal carry or on a windy/sandy competition range?

If you have had that happen before you know it basically smears the lens and potentially blocks the emitter from projecting the dot on the glass.

Check out this review by Military Arms Channel as they field test and torque this opitc:

Aimpoint Acro P-1 Red Dot Reflex Sight, No Mount - 3.5 MOA - 200504
  • Enclosed housing seals all electronic components safely within the sight
  • Enclosed optical channel prevents dot from being blocked by contaminants
  • Can be mounted to optics-ready pistols using optional adapter plates
  • Up to 1.5 years of continuous operation (at position 6) using one CR1225 battery (included)

Read More: Aimpoint ACRO P-1 Review

Vortex Razor RDS

Glock 19 MOS with Vortex Razor red dot sight
Image Referenced GunsAmerica

The Vortex Razor micro red dot is one of Vortex’s premium product. One of the best thing about it is that it sits quite high on the Glock MOS with the factory mounting plate, which offset the tendency people have where they aim low below their eye level.

The Razor’s overall profile is very similar to the Leupold DeltaPoint Pro as far as lens width and height

What’s different from the DeltaPoint Pro is that it’s slightly heavier (1.4 oz, where DeltaPoint is about 0.63oz), and the Vortex Razor has a bit more blue and green hue.

Overall it’s a great optic, but best for range & competition use.

Aimpoint Acro P-1 Red Dot Reflex Sight, No Mount - 3.5 MOA - 200504
  • Enclosed housing seals all electronic components safely within the sight
  • Enclosed optical channel prevents dot from being blocked by contaminants
  • Can be mounted to optics-ready pistols using optional adapter plates
  • Up to 1.5 years of continuous operation (at position 6) using one CR1225 battery (included)

Burris FastFire 3 – Best For The Money

Also Check Out: Best Micro Red Dot Under $400

glock 19 with burris fastfire 3
Image Referenced On Target Magazine

The FastFire 3 is the best selling micro red dot sight under just $220. It’s the smallest sight, which is very popular for slim profile centerfire and rimfire handguns for shooting competitions.

The optic is very simple to operate, 3 or 8 MOA dot you can pick from for fast reticle pick up and sight picture alignment, and it’s very durable with its shockproof design that withstands recoil in such as slim body.

For the money it’s the best small size reflex sight you can find that has also durable from an reputable company.

Burris 300234 Fastfire III with Picatinny Mount 3 MOA Sight (Black)
1,285 Reviews
Burris 300234 Fastfire III with Picatinny Mount 3 MOA Sight (Black)
  • PINPOINT ACCURACY – The FastFire III puts an unmistakable red dot at the point of impact within your field of view, giving you an immediate advantage in speed and accuracy.
  • LIGHTWEIGHT OPTICS – With lightweight construction and durable design, the FastFire III can be used as a primary sight or paired on top of an existing sight.
  • VERSATILITY DEFINED – Rely on the automatic brightness sensor to adjust to match the environmental conditions or choose one of the three manual brightness settings.
  • RED DOT SIGHT – Choose a 3 MOA dot, popular on rifles or with anyone wanting more pinpoint accuracy, or choose the 8 MOA dot, which is ideal for short range shooters and fast acquisiton. Windage...

If you didn’t find what you’re looking for, there are other high-end pistol red dot sights available on our site.

Glock MOS Mounting Plates Compatibility

Image Referenced Primary Arms

The Glock MOS adapters include Set 01, and Set 02.

Set 01 fits Glocks with the slide width about 1 inch. Set 02 fits Glock slide width about 1.12 inch.

The adapter plates are for

  • Trijicon
  • Docter
  • Meopta
  • Insight
  • C-More
  • Leupold

Please check out Glock’s official website for more info.

What To Look For In A Red Dot For Glock MOS

Glock 34 MOS with Trijicon RMR
Image Referenced Tactical-Life

Glock pistols are reliable and fun to shoot when you mount a reflex sight to it, it helps you shoot faster and aim better only if you practice a lot with it.

It’s a double edge sword where it can help you or it can totally slow you down.

Field Of View – Larger Window, Better Dot Tracking

The lens size of the micro red dot is important for picking up the dot fast, and also be able to track the dot on follow up shots.

The bigger the window, so it’s subjectively easier to shoot with a faster timer with it, and it’s the most important spec that helps shooter solve the sight picture inconsistency problem.

Dot Size Selections – 2 – 8 MOA

For close-range pistol shooting, 2 MOA to 8 MOA size dot is great because they cover a wide area of a target, which means faster sight picture acquisition and better shot placements.

This is useful for competition type of shooting when using a full-size Glock like the 34, 35 and 17L. For defensive shooting, aiming with a dot isn’t really necessary because generally, shit happens within 2-8 feet away, point and shoot will be just enough.

1 MOA is generally optimized for precision long-range shooting using a rifle for its refined dot that covers 1″ diameter at 100 yards.

Long Battery Life – 30K+ or 100K+ Hours

The industry standard for a micro red dot sight is about 2 years using just 1 CR2032 battery. It varies from optic to optic, based on adjustable brightness settings and the ones with advanced power circuits that extend the battery life even up to 10 years like the Holosun 507C, 407C, and HE508T.

Having a long battery life is always good for a pistol mounted red dot sight. It’s always annoying when the red dot optic goes dead when you’re ready to shoot or during your range session.

When you have something that lasts extremely long without a battery swap, it gives you the confidence and peace of mind every time you pick it up, you know it works.

Trijicon RMR vs SRO battery
Image Referenced Iraqveteran8888

Another great feature you should be looking for is the top-loading battery access, which eliminates the need to remove the optic for a battery change, and the need to re-zero your dot.

This is the exact reason why the NEW Trijicon SRO and Leupold DeltaPoint Pro are so much better than the original RMR when it comes to battery compartment access.

Durability – Survives Repeated Recoil & Shock

For defensive handgun shooters… There is a higher chance that you will rack the slide against the red dot one-hand on something like a table, hard edges, belt…etc

Yes, you can do that ONLY if the optic frame is strong enough!

Currently, Trijicon RMR, Holosun 507C, and HE508T can deliver that performance without breaking or lose zero, due to their rugged frame body made with 7075 T6 forged aluminum and Grade 5 Titanium (HE508T).

Glock MOS Optics Tips If You Can’t Easily Find The Dot

Before we discuss some optic equipped Glock shooting tips, let’s briefly cover what are some of the negatives of using a red dot on pistols.

The biggest issue: Sight picture & dot alignment inconsistency. Hard to find the dot OR Track the dot

Optic pistol shooters have always had love and hate relationships with slide mounted red dot sights, where it doesn’t matter how much you practice the draw you will always tend to miss the dot or have to find it, even if you’re just a hair off.

Tip 1: Use a bigger window optic for better dot acquisition and tracking

Tip 2: Experiment with a different size backstrap to alter your grip angle, which allows better and sight alignment

Tip 3: Practice, Practice, and Practice


The Glock MOS series pistol is a great gateway gun into shooting a pistol with an optic. It saves money and the time sending your slide to someone to get it milled.

Right out of the box, it’s ready for an optic with mounting plates for Trijicon, Leupold, and other major optic brands.

The Holosun HE508T is our favorite pick for its titanium durability and it’s basically a stronger and longer-lasting micro red dot than the Trijicon RMR. It’s great for conceal carry and range use.

Our 2nd favorite pick is the Trijicon SRO for its newest improved lens for faster dot tracking… All about the speed!

We hope you find this interesting and be sure to check out other content on our site.

Related Read More: Ways To Mount Optic On Glock Without Slide Milling

Glock MOS Optics FAQ

Popular Glock MOS questions answered.

What’s The Best Red Dot MOA Size For Glocks?

For pistol shooting, generally speaking a 2 MOA up to 8 MOA is great for close range shooting.

Commonly the 2 MOA VS 3.25 MOA are used the most. Honestly, they’re not that much different when you actually shoot with it side vy side. One is slightly bigger than the other, so for accuracy please go with the 2 MOA.

What Is The GLOCK MOS Configuration?

The Glock MOS (Modular Optic System) is basically Glock Gen 4 and Gen 5 handguns with optic ready slides straight out of the box.

With GLOCK MOS, it makes it easier to mount optic sights without slide milling, which saves you money and time.

Optic sights are popular in competitive shooting and are becoming increasingly more popular for home defense and target shooting.

Which Glock Models Are MOS Ready?

Gen 4 – G17, G19, G34, G35, G40, G41

Gen 5 – G17, G19, G34

and G45

Where To Buy Custom Optic Ready Glock Slides?

There are so many aftermarket custom Glock slides on the market. The top ones are:

ZEV, Agency Arms, Lone Wolf, Grery Ghost Precision, Lantac, POF, Brownells, Dynamic Weapon Solutions, Weapons Armament Research, NDZ

Why spend $220 – $400 milling your Glock slide + Shipping + Long lead time when you can purchase a brand new aftermarket slide for less!

Check out OpticsPlanet for great deals on aftermarket slides here.

Which Optic Size Is Best For Glock Conceal Carry

A lot of people have asked, and here is the best answer:

Trijicon RMR, HoloSun 507C, Vortex Viper,

Conceal carry pistol optic isn’t necessary, but if you do please note the following:

1. Low profile, which doesn’t stick out or print on your shirt
2. Long battery life, so it never fails on you
3. Easily adjustable brightness button design, so you can adjust it discretely
4. Strong front lens durability for one-handed slide rack.

Tyler Brown

Tyler has grown up in a firearm family, now he runs his own firearm business in Kansas. 4 years of experience managing an FN dealership, and it gave him many firearm business knowledge and product knowledge