Holosun 509T Review

Last Update:

We independently review everything we recommend. When you buy through our links, we may earn an affiliate commission.

Hey Gunners! Welcome to Holosun 509T Review.

I’ve had my hands on a variety of optics. Today, I’m diving deep into the Holosun HE509T. I’ve rigorously tested this red dot sight, and let me tell you, it’s been a fascinating journey. 

Stick around because this is an optic you might want to add to your arsenal.

Overview of Holosun 509T X2 Review

First things first, let’s talk about the sight as a whole. The Holosun HE509T is a closed-emitter optic, which essentially means its design gives you added durability. 

Forget about weather or debris; this little device is ready to withstand the elements. What really caught my eye? It’s surprisingly lightweight and compact compared to other sights in its category.

Core Specifications of the HOLOSUN HE509T

Battery LifeUp to 50,000 hours
Brightness Settings12 levels
Motion TechnologyShake Awake
MaterialTitanium Housing
Weight0.6 Pounds
Objective Lens Diameter20 mm
Night VisionYes
MountingWeaver Mount

What’s in the Box?

  • Holosun HE509T Red Dot Sight
  • Weaver Mount
  • Battery (CR1632)
  • Adjustment Tools
  • User Manual
  • Warranty Card

Compare Deals:

Holosun HE509T X2
Holosun HE509T X2 Enclosed Reflex Optical Red Dot Sight
Holosun HE509T-RD-X2 Enclosed Solar Powered Red Dot Sight
Holosun HE509T X2 Red Dot
Holosun HE509T X2 Reflex Sight
Holosun HE509T-RD X2 Titanium Multi-Reticle System Reflex Sight w/Solar Failsafe & Shake Awake

First Look & Impression

Right off the bat, the titanium housing screams quality. The optic has a solid, robust feel without being cumbersome. I was especially intrigued by its Shake Awake technology. 

This is the kind of feature that adds convenience to a shooter’s life. Even though it’s a closed-emitter design, the added bulk is minimal. It’s like the sight was engineered to give you the best of both worlds.

Who Should Get HOLOSUN HE509T

If you’re a serious shooter looking for a reliable, durable optic that can adapt to varying conditions, this sight is a prime candidate for your gear list.

Types of Guns Suitable for This Sight

  • Any Handgun with an RMR Footprint
  • Handguns with 1913 Rail System

Top 7 Features of HOLOSUN HE509T

1. Long Battery Life

The Holosun HE509T boasts an impressive battery life of up to 50,000 hours, making it a reliable choice for extended hunting trips or long-term use. Powered by a single CR1632 battery, it’s designed to maximize efficiency. 

One of the standout features is its ‘Shake Awake Technology,’ which puts the sight to sleep during periods of inactivity. Once it senses movement, the sight instantly wakes up and reverts to your last used brightness setting. This is a game-changer when it comes to saving battery. There is no need to manually switch it off; the sight takes care of itself.

My Testing

In my testing, the battery life didn’t quite hit the 50,000-hour mark, but it was still quite impressive. I used a fresh Duracell battery and started using it irregularly; it offered a pretty solid performance. And yes, I did keep the brightness settings quite high.

2. Advanced Brightness Settings

The Holosun HE509T is not your average red dot sight when it comes to brightness options. It offers 12 different brightness settings that adapt to various environmental conditions. 

From bright sunny days to low-light conditions, this sight has you covered. What really makes it stand out is its compatibility with night-vision devices. 

The parallax-free design offers unlimited eye relief, making it comfortable for extended use. In a nutshell, this is a versatile sight that performs exceptionally well under varying lighting conditions.

My Testing

During my testing, I cycled through all 12 settings and found that the transitions were smooth and immediate. Indoors or outdoors, the sight performed reliably.

Especially in dim settings, the compatibility with night-vision equipment came in handy. I didn’t encounter any issues, and the sight maintained its clarity and focus throughout.

3. Durability and Construction

Built with titanium housing, the Holosun HE509T is both lightweight and durable. It weighs just 0.6 pounds but doesn’t compromise on strength. 

The closed emitter design ensures that the LED is fully contained, offering added protection from weather and debris. Plus, its compact dimensions of 6.4 x 4.3 x 3.2 inches make it convenient for mounting and use. 

The sight is thoughtfully designed, with features like an easily accessible battery tray that’s secured with a small flathead screw, adding to its overall functionality and robustness.

My Testing

I put the sight through its paces in various conditions, including wet and muddy environments. The closed emitter design lived up to its promise, providing excellent protection against elements. 

I also found the sight to be incredibly resilient during my regular range visits and training sessions. So far, it’s held up remarkably well, without any significant issues to report.

4. Shake Awake Technology

Shake Awake technology is an impressive and thoughtful addition to this optic, designed to extend battery life without compromising immediate readiness. 

When the optic detects no movement, it automatically shuts off, saving that precious battery juice. Then, the moment it senses any movement, like picking up your gun; it instantly turns back on and returns to your last brightness setting. 

It’s like the sight knows when to sleep and when to jump into action. It’s tailored for situations like hunting, where you may spend long periods waiting for the perfect moment, or home defense scenarios, where you want your sight ready to go at a moment’s notice. Plus, you can customize the settings to suit your specific needs.

My Testing

I had to see how effective this feature was. I left the optic idle for a while, and sure enough, it turned off. As soon as I picked it up, it was back in business, as bright and accurate as before. In multiple situations, like when I was switching from outdoor to indoor conditions, the transition was smooth and immediate. 

The real kicker? There is no noticeable delay that could interfere with your shot. It’s a responsive, reliable feature that lives up to the hype.

5. Solar Failsafe Technology 

Solar Failsafe technology in the Holosun HE509T is more than just a cool add-on; it’s a lifeline when you need it the most. In essence, the sight uses solar cells as a secondary power source. 

That means if your battery ever fails, you still have a backup, allowing your sight to function using ambient light. So, if you’re in a situation where battery failure isn’t an option, this sight has got your back.

This feature ensures that you can maintain your optic’s operation for extended periods, making it ideal for survival situations, lengthy hunting trips, or any scenario where power sustainability is critical.

My Testing 

I was curious to see how effective the Solar Failsafe would be, so I deliberately allowed the battery to run low during an outdoor shooting session. 

The transition from battery to solar was seamless. In full daylight, the sight’s performance didn’t skip a beat, maintaining brightness and accuracy. The feature worked flawlessly, reassuring me that it’s a reliable backup in case of battery failure.

6. Night Vision

The Night Vision compatibility isn’t just a flashy extra; it’s a real asset for anyone looking to use this sight in low-light conditions. 

With specific settings designed to work seamlessly with night-vision devices, you’re not just limited to daylight operations. Whether it’s a nighttime hunt or a dusk shooting session, this sight ensures you won’t miss a thing.

My Testing

To test this out, I tried the optic with a night-vision device during a late-night outdoor session. The clarity was excellent, and there was no awkward glare or brightness to distort the view. 

It complemented the night-vision device superbly, making it an excellent choice for low-light scenarios.

7. Weight and Dimensions

The weight and dimensions of this sight deserve a mention. It weighs just 0.6 pounds and has dimensions of 6.4 x 4.3 x 3.2 inches. Lightweight yet sturdy, it strikes a nice balance. 

When it comes to firearms, every ounce matters. The lighter weight allows for easy maneuverability without compromising the sight’s robustness, thanks to the titanium housing.

My Testing

I noticed the sight’s weight, or lack thereof, immediately when I first attached it to my gun. Handling the firearm was just as smooth as without the sight.

During a day of shooting and carrying the gun around, the light weight made a world of difference. By the end, my arms were thanking me. So, in terms of form and function, it checks all the boxes.

Also Read: Holosun 508t Vs 509t

Footprint and Mounting Considerations

The Holosun 509T comes with a variety of mounting options, but there are some caveats to be aware of. While it does offer a proprietary 1913 rail system, the RMR adapter plate may not be everyone’s cup of tea. 

Specifically, the 509T-RD RMR adapter plate is not compatible with ZEV or Shadow Systems style RMR interfaces. If you don’t have the standard RMR cut or the one with only front locating nubs, you might find yourself in a bit of a problem.

Pros and Cons: Holosun 509T X2


  • Multiple Mounting Options
  • Proprietary 1913 Rail System
  • RMR Compatibility
  • Extended Battery Life
  • Solar Failsafe
  • Multi-Reticle System
  • Shake Awake Technology
  • Robust Titanium Housing
  • User-friendly Controls
  • Exceptional Glass Clarity


  • RMR adapter plate not compatible with ZEV or Shadow Systems style RMR interfaces
  • Mounting screws may be too long or too short, causing issues with securing the plate
  • Initial zeroing can be problematic

Holosun 509T vs Trijicon RMR

Holosun 509T X2 Review – Video

Final Verdict

After rigorous testing and close inspection, it’s clear that the Holosun HE509T is a top-tier optic that deserves serious consideration. 

As someone who’s been in the professional shooting realm for years, I can vouch for its exceptional performance, durability, and ease of use. This sight is a real gem.

HOLOSUN HE509T Red Dot Sight,2 MOA Dot, Black, HE509T-RD
  • EQUIPMENT INCLUDES: HE509T-RD Elite Red Dot Sight, Coin...
  • LONG BATTERY LIFE: Features include Super LED high...
  • ADVANCED TECHNOLOGY: Equipment includes 12 different...
  • SHAKE AWAKE TECHNOLOGY: Equipment shuts the LED sight...
  • SHAKE AWAKE TECHNOLOGY: Equipment shuts the LED sight...

See the detailed comparison of Aimpoint Acro P2 and Holosun 509t


What is the difference between HE509T-RD and X2?

The X2 version offers improved glass clarity, Lock Mode, and a Multi-Reticle System. It also includes an adapter plate for RMR-style footprints.

What is the battery life of the Holosun 509T X2?

The 509T X2 features Holosun’s Super LED and boasts a battery life of up to 50,000 hours.

Does the Holosun 509T use RMR footprint?

Yes, the Holosun 509T has an adapter plate that is compatible with HS507C & RMR mounting patterns.

What is the difference between HE and HS Holosun?

The key difference is the reticle color: “HE” models offer either green or gold reticles, whereas “HS” models come with a standard red reticle.

Do Holosun optics have a lifetime warranty?

Holosun offers a Limited Lifetime Warranty that applies specifically to the metal structure of the product.

One Request?

I worked hard on this post to help the shooters community. it would help me a lot if you consider sharing it on social media network

BecauseSharing Is Caring..

Because Sharing Is Caring..

Photo of author


I'm Micheal, an avid shooter and hunting enthusiast from Texas. I'm a recreational shooter who loves to spend time at the range and enjoy learning about new firearms and gears. I love to write about guns and share my passion for shooting with others.

Leave a Comment