Holosun HE509T-GR X2 Pistol Sight

Holosun HE509T-GR X2 Pistol Sight

Holosun, a popular manufacturer of high-quality, value-oriented electronic sights has introduced a new feature-rich model in its well-regarded 509 lineup.

Holosun HE509T-GR X2 Pistol Sight

The HE509T-GR X2 is a miniature LED sight featuring an enclosed emitter very similar to the Aimpoint ACRO. Boasting grade 5 titanium housing for additional ruggedness.

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Holosun HE509T-GR X2 Features

Those familiar with Holosun’s optics will recognize their usual laundry list of included high-end features, including:

  • Multi-coated glass.
  • Solar failsafe w/ auto adjust brightness
  • 50,000-hour battery life w/ 1632 battery, depending on brightness and reticle choice
  • Shakeawake technology
  • Multiple reticle choices
  • 10 daylight and 2 night vision settings

Holosun Specs

Light Wavelength: 540 nm
Reticle Color: Green
Magnification: 1x
Battery Type: CR1632
Weight: 1.72 oz
Dimension: 1.6×1.16×1.13 in
Material: Titanium
Storage Temperature: -40℃~70℃
Working Temperature: -30℃~60℃
Submersion: IP67
Price: $541.16

Holosun offers the 509T in a red LED as well, but the HE509T-GR is in high contrast and super-bright green.

Holosun 509T: Why Green LED Reticle?

Here’s why this is a great feature: as our eyes age, we don’t see colors in the RED spectrum as well as we used to. Red light is on the shorter light wavelength spectrum and as such – you can think of it akin to hearing – the shorter the wavelength (or higher frequency for sound) the harder it is for older eyes to pick up and differentiate from other colors.

Holosun 509T: Why Green LED Reticle

Studies show that, with practice, people with both young and older eyes see colors in the green spectrum more easily. This pays off on a pistol sight, which allows the shooter to acquire the target more quickly.

Holosun HE509T-GR X2 User Reviews

To understand what users think about the Holosun 509T, we checked user reviews on Amazon:

“Only time will tell how it holds up to lots of semi-auto shotgun rounds but I do like it, particularly for a shotgun due to the multiple reticle options. The open hashed circle is perfect for buckshot while the dot is perfect for slugs. It co-witnesses my ½-moon peep sight which is nice (Aridus?). Multiple setup options and I also really like that while it takes a battery it mostly relies on solar when it can. I only wish they used something more common like a 2032 battery. CR1632’s aren’t all that common. Also I have fairly bad astigmatism but this is one of the best RDS’s I’ve ever used in terms of very little flare.”


“The HOLOSUN HE509T X2 Reflex Pistol Sight is a game-changer in the world of optics. Its ‘Shake-Awake’ feature ensures that the sight is always ready when you are, and the enclosed design offers unbeatable protection from external elements. The clarity and precision offered by this sight are unparalleled, ensuring that every shot is on target. The parallax-free design further elevates accuracy, making target acquisition faster and more intuitive. Built with ruggedness in mind, yet not compromising on its aesthetic appeal, the HE509T X2 is a perfect blend of functionality and style. Whether you’re a professional shooter or a hobbyist, this sight will not disappoint. A top-tier product from HOLOSUN that truly enhances the shooting experience!”


“Time will tell if it’s as sturdy as advertised, but it’s not too large for concealment.
It is very easy to install and adjust, the green reticle is nice on my eyes, and the sight window is clear and helps with shooting more than I was expecting.”

Michael Pansacula

Final Words

Holosun HE509T-GR X2 Pistol Sight is a high-quality electronic pistol sight. Its multiple reticle system (MTS) makes it a perfect shooting accessory for every shooter.

Shake Awake technology prolongs battery life, and the Super Green LED is engineered to match the wavelength of light that the human eye reacts the most to.

Try the HE509T-GR X2, and let us know what you think about it in the comments below.

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