[Top 6] Best Optic For Glock MOS Handguns

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Here are our top 6 picks as the best optic for Glock MOS handgun.

We have tested a handful of Glock red dot sights that are proven to work based on their durability, reticle, battery life and cost.

Let's check them out...

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

Best Glock Red Dot MOS Optics

Holosun HE507C X2 - Best Overall

glock 34 mos with holosun 507c x2

Why people love Holosun 507C X2 - The Holosun HE507C X2 is by far the best RMR for Glock on the market. It has the same durability as the RMR and it's much more affordable.

Uses RMR Footprint - No special adapter or milling required! The same footprint as the Trijicon RMR

Bigger Buttons - Enlarged adjustment buttons for better reach for shooters with big fingers 

Side Loading Battery - Access CR1632 battery from the side tray instead of the bottom. This eliminates the need to remove the sight for battery swap and re-zeroing

Near Infinite Battery life - The Shake Awake technology saves tons of battery life by deactivating the optic when at rest, then turns it back on upon movement. 2X more battery life than the Trijicon RMR up to 50,000 hours

Solar Power BackUp - Solar fail-safe power kicks in immediately when the battery dies, so the optic will always remain on.


  • Uses RMR footprint
  • Long battery life + motion sensor aviation + solar power
  • No sight removal required for battery swap


  • Open emitter design attracts debris
  • Solar power doesn't work indoor
acss vulcan reticle pov

Try ACSS Vulcan reticle - Helps to re-center the dot

Trijicon SRO - Best Large FOV

Glock 17 gen 5 with trijicon SRO

Why we picked this one - Trijicon SRO is by far the best Glock MOS sight that enables the shooter to effortlessly acquire the sight picture. This means less time spend looking for the reticle if it's lost in the FOV during follow up shots.

Better Follow Up - Increased sight acquisition speed without losing the dot inside the window.

Bigger Window  - Re-acquire the sight picture faster after each follow-up shot even if the sight picture is slightly off center. 

Easier Battery Access - Load/Replace battery right from the top! No sight removal or re-zero required

Remembers Last Setting - It prevents accidental button adjustment under conceal carry clothing

Same RMR mounting footprint - Using the exact Trijicon RMR mounting footprint keeps everything compatible without having to buy special accessories.


  • Bigger window for dot tracking
  • Great Glock 17 red dot configuration
  • Same RMR footprint for existing RMR users
  • No sight removal required for battery swap


  • Open emitter design attracts debris
  • Lens frame durability not the same as RMR

Compare Deals:



Holosun 507K X2 - Best For Glock 43

Glock 43x mos holosun 507K

Why The HE507K - Made specifically for conceal carry users. The optic has everything the 507C has but reduced in overall size for conceal carry. Sub-compact Glock 43X MOS and Glock 48 users will love this. 

Easier Battery Access - Replaces the battery right from the SIDE without sight removal or re-zeroing.

Super Light Weight - Weighing only 1 oz, which is about 50% lighter than the HE407C. For conceal carry people, shaving down any weight is a plus.

Snag free holster draw performance - The NEW Holosun 507K 's rugged exterior housing withstands wear against clothing and provides snag-free draw out of IWB or OWB holsters.

Remembers Last Setting - Last reticle brightness setting is saved to prevent accidental button adjustment while carrying under tight clothing

Saves More Battery - The ShakeAwake technology instantly activates the reticle upon sensing motion & deactivates when sitting in idle to save more battery juice.

Built Like A Tank - Made with 7075 T6 Mil Spec aluminum body to endure rough handling in the field

Also check out the similar model Trijicon RMRcc

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  • Same features as Holosun 507C but smaller body
  • Very durable front lens for slide racking
  • Slimmer width to fit on Glock slides


  • Conversion mounting plate required

Leupold DeltaPoint Pro - Best Lens Hood Protection

glock 34 MOS deltapoint pro

The DeltaPoint Pro is another best reflex sight for Glock MOS handguns. It has a slightly taller and wider lens than the Trijicon RMR, and it's one of Leupold's best products. It's also compatible for rifles, and shotguns.

New 6 MOA Available - 6 MOA is much easier to pick up, and great for shooters with astigmatism

Extra Housing Protection - The added lens hood protects the optic from receiving direct impact that increases durability and making it fail proof.

Larger Window Like SRO - Similar window size like the Trijicon SRO in a wide rectangle POV profile

Easier Battery Access - Load/Replace battery right from the top! doesn't require tool for sight removal in order to switch to a fresh CR2032 battery

Read more DPP reviews here


  • Big window as Trijicon SRO but wider
  • Top loading battery design
  • Additional lens hood protection
  • 6 MOA now available for purchase


  • Lower battery life
  • Hard to see reticle when adjusting the brightness

Holosun 509T - Best Protected Housing

Glock 19 MOS 509T

Why Pick The HE509T - While the Aimpoint ACRO P1 costs over $600, the HE509T is the best alternative. It's a fully closed emitter pistol red dot with increased durability and reliability than open emitter sights. 

Side Battery Access - Access the battery from the side without removing the sight off the slide or re-zeroing required.

Tighter Mount

Fully Enclosed Body - Fully protected open reflex sight prevents dust, water moisture and other nasty stuff from getting into emitter projector screen. 

Solar Backup - The sight's solar power will kick in after the battery dies. For 100K hours, you will be waiting for a long time to test out this feature.

Note: That this optic requires very special clamp based mounting plate. If your MOS handgun isn't compatible, please buy aftermarket mounting plates from various companies

Read more reviews here


  • Closed emitter design blocks debris
  • Titanium body for hard slide racking
  • Motion sensor reticle activation
  • Beefed up 508T 


  • Lower battery life

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Burris FastFire 3 - Best For The Money

Also Check Out: Best Micro Red Dot Under $400

Glock 19 gen 3 with Burris fastfire 3

Why Buy The Fast Fire 3 - This super light weight Burris FastFire 3 provides a 9mm Glock pistol with pinpoint accuracy for anyone starting out new or experienced shooters. 

Auto Brightness Control - The sight adjusts automatically to match the environmental conditions to provide a bright reticle for the shooter

Top Battery Access - Battery swap is extremely easy without sight removal. The automatic time-out feature after 8 hours helps save more battery juice

Auto Brightness Control - The sight adjusts automatically to match the environmental conditions to provide a bright reticle for the shooter

Durable & Affordable - The battery lasts as long as 4+ years and it's by far the most affordable open emitter reflex optic under $250

Compare Deals:



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

Common FAQ1625

Glock MOS Slide Mounting Plate Compatibility

Glock MOS mounting plates
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.

Large FOV - Better Dot Tracking

The bigger the window, the easier it is for the shooter to pick up the reticle and not get lost in the window trying to find the dot after each shot.

Be sure to check out Holosun 507C's ACSS Vulcan reticle for better target acquisition.

Dot Size Selections - 3 - 8 MOA

For close-range pistol shooting, 3 MOA or 8 MOA size dot are great because they are easy to pick up and the dot appears much rounder for shooters with astigmatism.

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

Most pistol red dot sights can last up to 50,000 hrs, and some optics like the Holosun 507C can last even longer with the shakeawake and solar panel technology.

Long battery also eliminates the need to swap battery especially for RMR where the battery goes on the bottom. In another word, no sight removal is required.

trijicon sro top battery access

Another great feature to look 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 for that.

Durability - Survives Repeated Recoil & Shock

For defensive handgun shooters... durable optics can rack the slide against the red dot front lens one-hand on something like a table, hard edges, belt...etc

Currently, Trijicon RMR, Holosun 507C, and HE508T can deliver that performance without breaking or lose zero.

Tips If You Can't Easily Find The Dot

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

Tip 4: Be sure to check out Holosun 507C's ACSS Vulcan reticle for better target acquisition.