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  • Post last modified:January 8, 2024

Here are the best Glock MOS red dot options.

These red dot sights fit on optic ready Glock MOS with the right optic plates. 

Best Glock MOS Red Dot Options

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Holosun 507C X2 - Best Overall

The Holosun HE507C X2 is by far the best RMR alternative 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 

holosun 507c ACSS model

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.

holosun 507c red dot pov


  • 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

Holosun 507C ACSS - Faster To Acquire

holosun acss long range shot low light

The Holosun 507C ACSS is basically the same optic as the Holosun 507C X2, and it features the new ACSS vulcan reticle to help the shooter to find the reticle inside the optic's window.

The 250 MOA ring helps guide the eye back to the center.

Trijicon SRO - Best Large FOV

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. 

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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
  • Best RMR for Glock
  • No sight removal required for battery swap


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

Holosun EPS Carry - Best Weatherproof

glock 43X MOS holosun EPS carry

The Holosun EPS Carry is full weatherproof and no dirt or moisture will ever get inside the optic to cause malfunction. The mounting plate fits both front and rear recoil lugs and the EPS Carry fits right on the top.

Closed Emitter - Fully weatherproof against dirt, water and other debris

Side Battery Access - Insert the battery from the side without sight removal

Multiple Reticle Systems - 2 MOA, 6 MOA or mutli reticle system with 32 MOA ring (with solar failsafe). Sold separately

No Lens Distortion - The aspherical glass with zero distortion


  • Magnification: 1X
  • Reticle: 2 MOA, 6 MOA or MRS
  • Turret Value: 1 MOA / Click
  • Window Size: 0.58" X 0.77"
  • Construction: 7075 T6 aluminum IPX8 rated
  • Dimension: 1.62" X 1.07" X 0.95"
  • Weight: 1 oz
  • Battery Life: 50,000 hours


  • Full weatherproof for carry
  • Lock out mode built in
  • No lens distortion
  • Very long battery life


  • Open emitter design attracts debris

Holosun 507K X2 - Best Subcompact

best holosun for glock 19

The Holosun 507K is one of the best Glock red dot for the micro compact handguns. The optic has everything the 507C has but reduced in overall size for conceal carry. Sub-compact Glock 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.

holosun 507k on glock 43 mos

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

holosun 507k x2 rear view

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

holosun 507k x2 battery access door


  • 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

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

leupold deltapoint pro unboxing

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

See DeltaPoint Pro reviews



  • 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

best red dot for glock mos

Why Pick The HE509T - While the Aimpoint ACRO P1 costs over $600, the Holosun 509T is the best alternative. It's a fully enclosed emitter red dot sight 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.

holosun 509t pov 32 moa ring reticle

Tighter Mount - Clamp mount offers unique mounting solution to ensure zero retention.

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

fully protected holosun 509T

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


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


  • Lower battery life

Burris FastFire 3 - Best For The Money

best red dot for glock 19 mos

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

Common FAQ1625

Glock MOS Slide Mounting Plate Compatibility

Glock MOS mounting plates

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.

We in fact highly recommend the aftermarket DPP optic plate:

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.

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. 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.

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