7 Best Holosun for Glock 43x

When it comes to enhancing your Glock 43X MOS with a high-quality optic, choosing the Best Holosun for Glock 43X can significantly improve your accuracy, speed, and overall shooting experience.

Holosun has earned a strong reputation for producing reliable, feature-rich red dot sights that are ideal for concealed carry and everyday use. Whether you’re seeking a slim, direct-fit model or an enclosed emitter for added protection, Holosun offers several excellent options tailored to fit the compact size and RMSc footprint of the Glock 43X.

In this guide, we’ll break down the top Holosun sights that stand out in terms of durability, compatibility, brightness controls, and ease of use. From the popular 507K X2 to the rugged EPS Carry, we’ll help you find the Best Holosun for Glock 43X based on your specific needs and preferences.

1.Holosun 507K ACSS Vulcan

The Holosun 507K ACSS Vulcan is engineered for shooters who demand precision and speed from their concealed carry optic. Designed specifically for slimline handguns like the Glock 43X MOS and Sig P365, this red dot sight blends compact dimensions with advanced performance. Its rugged design and intuitive interface make it ideal for both self-defense and range use.

This optic stands out for its ability to provide consistent performance in high-stress environments. Whether you’re drawing from concealment or engaging multiple targets, the Holosun 507K ACSS Vulcan helps streamline your shooting experience without adding bulk or complexity.

Key Features

ACSS Vulcan Reticle System
The red-illuminated reticle features a 3 MOA center dot surrounded by an outer circle, guiding your eye back to center when alignment is off. This helps you reacquire the dot faster, especially under pressure or during dynamic movement.

Two Reticle Modes
You can toggle between two settings: dot-only for clean precision or dot with circle for rapid target acquisition. This dual-mode functionality supports both defensive and target shooting applications.

Shake Awake Technology
Motion-sensing activation powers the optic on automatically when movement is detected, conserving battery while keeping the optic ready. It also retains your last brightness setting for seamless use.

Parallax-Free with Unlimited Eye Relief
With no parallax and unlimited eye relief, this red dot ensures a crisp sight picture from any shooting angle, which is critical in fast-paced shooting scenarios.

Ultra-Compact and Durable Design
Built for micro-compact pistols, the 507K ACSS Vulcan maintains a low profile while withstanding recoil and harsh conditions. It mounts easily to RMSc-footprint slides without the need for an adapter.

Specifications

Reticle: ACSS Vulcan (3 MOA dot + outer circle)
Reticle Modes: Dot only / Dot + Circle
Illumination Color: Red
Activation: Shake Awake with last setting recall
Parallax-Free: Yes
Eye Relief: Unlimited
Battery Type: CR1632 (side tray access)
Housing Material: Aluminum
Footprint: RMSc compatible
Waterproof / Shockproof: Yes
Size: Ultra-compact

Pros

ACSS reticle enhances dot recovery under stress
Shake Awake feature improves battery efficiency
Multiple reticle options add shooting flexibility
Compact enough for concealed carry
Clear, parallax-free optics with wide field of view

Cons

Higher price point than simpler red dots

2.Holosun EPS (Enclosed Pistol Sight)

The Holosun EPS Carry-GR-2 is purpose-built for shooters seeking a rugged, enclosed red dot designed to fit today’s most popular subcompact pistols. Whether you’re outfitting a Glock 43X MOS, Sig P365XL, or Springfield Hellcat, this optic offers serious performance in a compact, lightweight frame. Thanks to its enclosed emitter and ultra-low mounting height, the EPS Carry delivers a clearer sight picture and better environmental protection than open-emitter optics.

What sets the EPS Carry apart is its design tailored specifically for narrow pistols without compromising durability or clarity. From daily concealed carry to range sessions, this optic ensures you get the performance you need with the reliability Holosun is known for.

Key Features

Enclosed Reflex Design with RMSc Footprint Adapter
The enclosed emitter design offers better protection from dust, moisture, and debris. It includes an RMSc-to-K footprint adapter, allowing for a versatile fit on a wide range of optics-ready subcompact handguns.

540nm Green Super LED with 2 MOA Dot
Equipped with Holosun’s high-visibility green 2 MOA dot, this sight ensures precise aiming while reducing eye strain, especially in bright daylight conditions.

Shake Awake Technology
To extend battery life, the Shake Awake feature deactivates the LED when idle and instantly reactivates with the slightest movement. Adjustable timers let you customize the sleep mode delay or disable it entirely.

Multilayer Reflective Glass
The optical-grade glass with multilayer coatings improves clarity, boosts light transmission, and enhances reticle brightness. It also reduces glare and power consumption, resulting in better battery efficiency.

Built-in Rear Notch Sight & Aspheric Lens
The ultra-clear aspheric lens offers a distortion-free view. Additionally, the built-in rear notch makes co-witnessing with factory iron sights seamless on most subcompact pistols.

Specifications

Reticle: Green 2 MOA Dot
Light Wavelength: 540nm
Magnification: 1x
Parallax Free: Yes
Eye Relief: Unlimited
Battery Type: CR1620
Battery Life: Up to 50,000 hours
Brightness Settings: 10 daylight, 2 night vision
Window Size: 0.58 x 0.77 inches
Housing Material: 7075-T6 Aluminum
Surface Finish: Anodized
Adjustment per Click: 1.5 MOA
Windage & Elevation Range: ±30 MOA

Pros

Fully enclosed emitter for superior environmental protection
Long-lasting battery life with Shake Awake feature
Ultra-clear reticle with high-contrast green LED
Low-profile design allows co-witness with factory sights
Durable 7075-T6 aluminum construction

Cons

Uses CR1620 battery, which may be less common than CR2032

3.Holosun 507K X2 (Red or Green)

Designed for the growing world of micro-compact pistols, the Holosun 507K X2 delivers rugged performance in a streamlined, low-profile package. Perfect for concealed carry enthusiasts, this optic provides fast target acquisition and dependable durability without adding bulk to your firearm. Whether you’re running a Sig P365X/XL or similar subcompact, the 507K X2 offers an ideal solution for accurate aiming in any environment.

Its refined construction, long battery life, and multi-reticle system make it a strong contender in the world of everyday carry optics. Built with quality and ease of use in mind, this model brings advanced technology into a compact, practical footprint for self-defense, range shooting, or duty use.

Key Features

Multi-Reticle System (MRS)
The MRS offers a 2 MOA dot, a 32 MOA circle, or both combined. This flexibility helps you adapt your sight picture for close-quarters speed or longer-range precision with the push of a button.

Shake Awake Technology
This power-saving feature shuts off the LED when the optic is idle and reactivates it with the slightest movement. Sleep mode delay is adjustable between 10 minutes and 12 hours—or can be disabled altogether.

Side-Mounted CR1632 Battery Tray
The battery compartment is easily accessible from the side, allowing you to swap power sources without removing the optic or re-zeroing it.

Lock Mode for Button Protection
A built-in Lock Mode prevents accidental changes to brightness or reticle settings during carry or high-movement situations.

Durable 7075-T6 Aluminum Housing
Constructed from hard-anodized 7075 aluminum, the 507K X2 is lightweight yet strong enough to handle daily carry, impact, and recoil.

Specifications

Reticle: 2 MOA Dot, 32 MOA Circle, or both
Light Wavelength: 540nm (Green Model)
Magnification: 1x
Parallax Free: Yes
Eye Relief: Unlimited
Battery Type: CR1632
Battery Life: Up to 50,000 hours
Brightness Settings: 10 daylight, 2 night vision
Window Size: 0.58 x 0.77 inches
Housing Material: 7075-T6 Aluminum
Finish: Anodized
Adjustment per Click: 1 MOA
W&E Travel Range: ±30 MOA

Pros

Multiple reticle options for versatile shooting scenarios
Compact and lightweight design ideal for subcompacts
Long battery life with Shake Awake power management
Side battery tray allows for tool-free replacement
Durable build quality with aluminum housing

Cons

Small window size may limit sight picture for some users

4.Holosun 509T

The Holosun 509T-GR X2 stands at the top tier of pistol optics, delivering rugged reliability and feature-rich performance in a fully enclosed reflex design. Built for serious shooters and demanding environments, this optic blends cutting-edge technology with battle-ready construction. Whether you’re a professional operator or a civilian carrier, the 509T offers unmatched durability and precision in compact form.

Engineered for pistols but tough enough for tactical duty, it features a reinforced titanium housing, adaptive reticle modes, and dual power sources. If you’re looking for one of the most durable and versatile red dot sights available, the Holosun 509T is a strong contender.

Key Features

Multi-Reticle System (MRS)
Choose between a precision 2 MOA dot, a 32 MOA circle for fast acquisition, or both combined. The larger ring offers an intuitive aiming aid at close range while the dot ensures pinpoint accuracy.

Enclosed Emitter Design
Unlike open reflex optics, the 509T features a fully enclosed housing that prevents debris, moisture, or glare from interfering with your sight picture—ideal for harsh environments or duty use.

Solar Failsafe
When the battery runs low or fails, the optic switches to its solar backup. In auto mode, it also adjusts reticle brightness based on ambient lighting to ensure visibility in every condition.

Shake Awake Technology
The optic powers down when idle and reactivates with even the slightest motion. Wake delay settings are adjustable, extending battery life up to 50,000 hours.

Grade 5 Titanium Housing
Stronger than aluminum, the 509T’s titanium construction ensures maximum durability without adding unnecessary weight. This makes it impact-resistant and ideal for rugged daily use.

RMR Footprint Adapter Plate
The included adapter plate ensures compatibility with a wide range of handgun slides, including those cut for the RMR footprint.

Specifications

Reticle: 2 MOA Dot & 32 MOA Circle
Light Wavelength: 540nm (Green)
Magnification: 1x
Parallax Free: Yes
Eye Relief: Unlimited
Power Source: CR1632 Battery + Solar
Battery Life: Up to 50,000 hours
Brightness Settings: 10 daylight, 2 night vision
Window Size: 0.66 x 0.9 inches
Housing Material: Grade 5 Titanium
Finish: Anodized
Adjustment per Click: 1 MOA
W&E Travel Range: ±30 MOA

Pros

Fully enclosed design resists debris and weather
Durable titanium construction for hard use
Long-lasting battery with solar backup
Adaptive reticle system for versatility
Compatible with RMR footprints via included adapter
Auto-brightness adjusts for all lighting conditions

Cons

Slightly bulkier profile may not suit micro-compacts

5.Holosun 508T

The Holosun 508T-GR X2 is a top-tier open reflex sight crafted for shooters who demand resilience, precision, and modern tech in one compact optic. Designed specifically for handgun applications, it combines rugged titanium construction with a feature set that rivals anything in its class.

Whether you’re training at the range or carrying for personal defense, the 508T-GR X2 stands out with its reliability and adaptability. It’s built to endure the toughest conditions while delivering the clarity and responsiveness required in fast-paced environments.

Key Feature

Multi-Reticle System (MRS)
The MRS allows users to switch between a precise 2 MOA dot, a fast-acquisition 32 MOA circle, or a combination of both. This makes it suitable for everything from close-quarters engagements to precise distance shots.

Shake Awake Technology
This motion-sensing feature preserves battery life by deactivating the LED during inactivity. As soon as movement is detected, the sight powers back on instantly. Wake time can be adjusted or disabled according to user preference.

Solar Failsafe
Holosun’s Solar Failsafe ensures your optic remains powered even when the battery dies, using available light as a backup source. In Auto Mode, the sight adjusts brightness based on ambient lighting for consistent reticle visibility.

Lock Mode
Accidental adjustments during carry or handling can be prevented by activating Lock Mode, which disables the sight’s buttons until intentionally unlocked.

Titanium Housing
The 508T features a Grade 5 titanium body that’s both lightweight and ultra-durable. It provides superior impact resistance and longevity compared to traditional aluminum housings.

Specifications

Reticle: Green 2 MOA Dot & 32 MOA Circle
Light Wavelength: 540nm
Magnification: 1x
Parallax-Free: Yes
Eye Relief: Unlimited
Power Source: CR1632 Battery & Solar Panel
Battery Life: Up to 50,000 Hours
Brightness Settings: 10 Daylight & 2 Night Vision
Window Size: 0.63 x 0.91 in
Housing Material: Grade 5 Titanium
Adjustment per Click: 1 MOA
Windage & Elevation Travel Range: ±50 MOA

Pros

Extremely durable titanium body
Clear green reticle with long battery life
Auto-brightness via solar backup
MRS allows user preference for speed or precision
Shake Awake adds readiness and conserves power
Lock Mode prevents accidental setting changes

Cons

Higher price point than standard aluminum optics

6.Holosun 507C X2

The Holosun HE507C-GR X2 is a purpose-built open reflex sight designed for full-sized pistols. It delivers outstanding performance through a fusion of rugged design, advanced battery-saving tech, and user-friendly features. Whether you’re competing, training, or carrying for defense, the 507C-GR X2 offers rapid target acquisition and durability under demanding conditions.

Its sleek profile, extended battery life, and customizable reticle system make it one of the most versatile optics in Holosun’s lineup. With both solar and battery-powered capabilities, this optic ensures you’re never left without a sight picture.

Key Feature

Multi-Reticle System (MRS)
Switch between a precise 2 MOA dot, a 32 MOA circle, or a combination of both for fast and flexible aiming. This feature is ideal for adapting to various shooting distances and personal preferences.

Shake Awake Technology
When not in motion, the LED shuts off to conserve power. The sight instantly reactivates at the slightest movement, ensuring readiness at all times. Wake time is user-configurable between 10 minutes and 12 hours.

Solar Failsafe
Even if the battery fails, this system keeps the optic powered using ambient light. In Auto Mode, it dynamically adjusts reticle brightness based on surrounding light levels, enhancing visibility in all environments.

Lock Mode
To prevent accidental button presses or settings changes, Lock Mode disables the controls until manually unlocked—perfect for high-movement scenarios like concealed carry or tactical operations.

Durable Aluminum Housing
Made from 7075 T6 aluminum and finished with a robust anodized coating, the 507C-GR X2 is built to withstand the rigors of hard use without adding unnecessary weight.

Specifications

Reticle: Green 2 MOA Dot & 32 MOA Circle
Light Wavelength: 540nm
Magnification: 1x
Parallax-Free: Yes
Eye Relief: Unlimited
Power Source: CR1632 Battery & Solar Panel
Battery Life: Up to 50,000 Hours
Brightness Settings: 10 Daylight & 2 Night Vision
Window Size: 0.63 x 0.91 in
Housing Material: 7075 T6 Aluminum
Surface Finish: Anodize
Footprint: RMR Standard

Pros

Long battery life with solar backup
Versatile reticle options for different shooting styles
Durable aluminum housing
Shake Awake adds readiness and conserves power
Lock Mode enhances security during use
Side battery tray allows for quick changes without dismounting

Cons

May sit higher than some ultra-low profile optics

7.Holosun EPS Carry (2 MOA or MRS) – Red or Green

The Holosun EPS Carry is a game-changing reflex sight designed specifically for narrow-profile subcompact handguns. With an enclosed emitter system and a sleek, low-profile build, this optic delivers reliable performance in a compact package. Its ultra-clear aspheric glass lens and exceptionally low dot height make it co-witness friendly with most factory iron sights—ideal for concealed carry users who refuse to compromise.

Crafted from durable 7075 T6 aluminum and compatible with a wide array of subcompacts—including Glock 43X/48 MOS, Sig Sauer P365 X/XL, and Springfield Hellcat—the EPS Carry provides dependable aiming, even in demanding environments. Whether you choose the crisp 2 MOA dot or Holosun’s versatile Multi-Reticle System (MRS), you’re getting a top-tier optic built for precision, speed, and concealability.

Key Feature

Multi-Reticle System (MRS)
Available on select models, MRS allows users to switch between a clean 2 MOA dot, a 32 MOA circle, or both combined. This makes the EPS Carry adaptable for close-quarters engagement or more refined long-distance precision.

Aspheric Lens Design
The specially designed lens eliminates distortion, delivering an edge-to-edge clear sight picture with minimal parallax—critical for fast and accurate target acquisition.

Shake Awake Technology
With motion detection sensors, the EPS Carry conserves battery life by powering down when idle. A slight movement instantly reactivates the optic. Wake delay is user-configurable between 10 minutes and 12 hours—or can be disabled altogether.

Multilayer Reflective Glass
Holosun applies advanced coatings to enhance light transmission, reduce glare, and maximize battery efficiency—all while producing a bright and crisp reticle in any lighting condition.

Built-In Rear Notch Sight & Adapter Plate
A rear notch is integrated into the housing to serve as a backup sighting option. The included RMSc-to-K adapter plate extends mounting compatibility with more handgun models out of the box.

Specifications

Reticle Options: 2 MOA Dot (Green or Red), or MRS
Light Wavelength: 540nm (Green LED)
Magnification: 1x
Eye Relief: Unlimited
Parallax Free: Yes
Power Source: CR1620 Battery
Battery Life: Up to 50,000 Hours
Brightness Settings: 10 Daylight & 2 Night Vision
Window Size: 0.58 x 0.77 in
Housing Material: 7075 T6 Aluminum
Surface Finish: Anodized
Mounting Footprint: RMSc with RMSc-to-K Adapter Plate Included

Pros

Ultra-low profile perfect for subcompact pistols
Excellent glass clarity with minimal distortion
Extended battery life with solar-efficient LED
Built-in rear sight notch enhances versatility
Compatible with factory iron sights and multiple pistol models
Motion-activated Shake Awake for instant readiness

Cons

Smaller window than some full-size optics

Next Read: 8 Best EDC Red Dots

FAQs: Best Holosun for Glock 43X

1. Which Holosun optics fit the Glock 43X MOS without extra modification?
The Holosun EPS Carry is the best match for the Glock 43X MOS. It uses the RMSc footprint and mounts directly without any filing or adapter plates.

2. What’s the difference between the 507K X2 and the EPS Carry?
The 507K X2 has an open emitter design, which keeps it light and compact. The EPS Carry offers an enclosed emitter for better protection against dust and moisture.

3. Do I need an adapter to mount a Holosun optic on my Glock 43X?
If you have the MOS version, you can mount the EPS Carry directly. For the 507K X2 or 407K X2, you may need a thin adapter plate or slide modification for a perfect fit.

Conclusion

Choosing the Best Holosun for Glock 43X comes down to your shooting needs and preferred optic style. Whether you want an enclosed emitter like the EPS Carry for extra durability or a lightweight open emitter like the 507K X2 for everyday carry, Holosun offers options that balance performance, reliability, and compact design.

These optics not only improve target acquisition but also enhance your overall shooting experience. With the right Holosun mounted, your Glock 43X becomes a more effective and versatile EDC firearm.