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Questions & Answers
Would I need to run adapter plates and suppressed height sights for Glock 34 Gen 5???? Expert Answer

The Holosun HE509-RD Enclosed Solar Powered Red Dot Sight includes a Glock MOS adapter plate in the box. So as long as you have an MOS (Optic Ready) model Glock 34 you will be able to install this optic using the adapter plate included in the box. To co-witness with the optic, you would need to use suppressor height sights. If you do not have an MOS model Glock 34, you will not be able to install this optic.

by Ethan, Gear Expert, May 20, 2024
Will this optic fit on an ADM QD mount? I plan to run it as a piggy back optic on my AR at the 12 oclock on my lpvo. Expert Answer

The Holosun HE509-RD Enclosed Solar Powered Red Dot Sight has a proprietary footprint but has an RMR footprint adapter plate. So if you use an RMR compatible piggy back mount of some sort plus the Holosun HE509-RD Enclosed Solar Powered Red Dot Sight RMR adapter plate it could work but would sit pretty high.

by Hunter, Gear Expert, April 24, 2023
Customer Reviews
Helpful Positive Review
acss reticle by Richie Lyons, Verified Owner, January 29, 2025
If you have an astigmatism don’t waste your time with other reticles the acss reticle will work for you.
2/2 found this helpful
Helpful Positive Review
primary arms Chevron rectical by iowarider, Verified Owner, November 22, 2024
I bought this specifically for the Chevron instead of dot rectical. I have astigmatism and dots tend to flare. A like being able to place the point of impact at the top of the pyramid, vs covering it up with the dot. I took one star off because I am...
Read More...
1/1 found this helpful
Helpful Positive Review
love the Chevron rectil by iowarider, Verified Owner, November 15, 2024
For me, the Chevron reticle is much more accurate than the dot. I like the point of aim being at the tip of the chevron rather than the target being buried by the dot. At the same time, if you simply need fast acquisition, it's better as well.
1/1 found this helpful
Helpful Positive Review
Sweet Optic by VanillaGuerrilla, March 2, 2023
I haven't been a huge fan of red dots on pistols until now. I found myself having to search for the dot, particularly in bright outdoor light. Put this on my glock 45, well my armorer did. Can't miss with the chevron reticle and the big red circle wi...
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6/6 found this helpful
Helpful Negative Review
Quit working after a thousand rounds by Sungwook Yang, Verified Owner, August 16, 2025
The reticle is great, when it works. Mine just stopped working after around a thousand rounds. The red dot just disappeared. I changed the battery but it did not bring it back to life. I did not drop it nor put it in the water. Not even seen the rain...
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1/1 found this helpful
Most Recent Reviews
not for any Cz by iowarider, Verified Owner, November 26, 2024
I have been looking for an adapter plate that would replace the rear sight it fits into the dovetail. I need the adapter plate to mount it to a CZ po1 and there does not seem to be any available. both optics planet and hollow sun have not responded w...
Read More...
0/4 found this helpful
Read All 8 Reviews
Color:
Black
Reticle:
ACSS Vulcan
Illumination Color:
Red
Condition:
New
Quantity:
1
Red Dot Sights-Footprint:
Not Applicable

Code: 29R-RD-HOLO509-HE509-RD-ACSS-M

MPN: HE509-RD-ACSS-M

UPC: 810047071785

List: $529.99Save 11%
$469.99

Buy Together and Save

OP Bucks$9.40

Product Info for Primary Arms Holosun HE509-RD Enclosed Solar Powered Red Dot Sight

A lot of shooters and gun owners who purchased or built their handgun from the ground up use the tried and true three dot iron sight arrangement. Many of us spend plenty of time at the range attempting to achieve better shot placement. While three dot iron sights are pretty good, the Holosun HE509 Powered Red Dot sight with ACSS Vulcan reticle is almost guaranteed to help you improve your accuracy.image

This pistol sized Holosun Red Dot Sight straightaway allows for a large field of sight and has those features which allow you to sight in quickly and acquire the target and the location you intend to hit. Whats so neat about the Holosun HE509 is that the entire sight system is fully enclosed in light and rugged aluminum. Built to provide enhanced environmental protection and abrasion and shock protection, the HE509 Red Dot Sight protective housing stands head and shoulders above an open form reflex form factor.

Note: The 509 ACSS model does not share the same footprint as the 509T (non-ACSS models) and therefore is incompatible with aftermarket mounting solutions and custom cut slides for the 509T (non-ACSS models).

The revolutionary patent-pending ACSS Vulcan reticle provides a large circle guiding the eyes towards the 10 MOA center chevron, eliminating one of the biggest challenges for shooters new to slide-mounted red dots. If you are off-center, a portion of this outer circle will appear in the window to give you an instant reference on how to get centered. The circle phases out of the sight window completely when the center chevron is properly aligned in the sight window. This patent-pending reticle function significantly improves sight acquisition. It takes the common frustration of hunting for the center reticle out of the equation. Don't need the circle? It can be easily deactivated to extend the battery even further.

The Holosun HE509 Red Dot Sight uses Solar Failsafe technology to power the optic providing the shooter or operator with a consistent, and very reliable point of aim. Another feature you simply dont expect with a lithium powered optic sight such as this is you dont have to worry about turning it on or forgetting to turn it off.

The Holosun Red Dot Sight uses patented Shake Awake technology which senses motion to power the sight on and off. In addition, Holosun manufactured this little sucker with a brain that recalls your last setting and makes sure you dont lose those customized settings once the sight system turns off.

Worried about battery life? The Holosun HE509 Red Dot Sight offers up to 20,000 hours of battery life. Simply put, we dont think youre going to have to worry about buying a new battery for this sight system for quite a while. All versions of the Holosun Red Dot Sight system are projected from the same LED, so you dont have to worry about having to re-zero when changing reticles.

Altogether, the Holosun Red Dot Sight is a much better sight system for your firearm than traditional iron three dot systems. If you want to start hammering that 5X target to shreds and not only hitting what you aim at, but sending that shot exactly where you wanted it to go, The Holosun HE509 Red Dot Sight this is the sight system for you.

WARNING: California`s Proposition 65

Specifications for Primary Arms Holosun HE509-RD Enclosed Solar Powered Red Dot Sight:

Manufacturer: Primary Arms
Color: Black
Finish: Hardcoat Anodized
Fabric/Material: 7075-T6 Aluminum
Magnification: 1 x
Objective Lens Diameter: 0.66 - 0.9 in
Reticle: ACSS Vulcan
Illumination Type: LED
Illumination Color: Red
Eye Relief: Unlimited
Adjustment Type: MOA
Adjustment Click Value: 1 MOA
Battery Type: Stand Alone Lithium
Battery Quantity: 1
Water Resistance Level: Waterproof
Shockproof: Yes
Fogproof: Yes
Gun Make: AR Platform
Weight: 2 oz
Condition: New
Package Type: Box
Magnification Type: Fixed
Lens Finish: Multi-Coated
Quantity: 1
Red Dot Sights-Footprint: Not Applicable
Attachment Type: Slide

Features of Primary Arms Holosun HE509-RD Enclosed Solar Powered Red Dot Sight

  • Finish/Material: Aluminum
  • Adapter Plate for Glock MOS
  • Reticle: ACSS Vulcan
  • Illumination Type: LED
  • Illumination Color: Red
  • Brightness Settings: 12
  • Eye Relief: Unlimited
  • Length: 1.78
  • Width: 1.22
  • Height: 1.14
  • Weight: 2 Oz

Package Contents:

  • Primary Arms Holosun HE509-RD Enclosed Solar Powered Red Dot Sight

Primary Arms Holosun HE509-RD Enclosed Solar Powered Red Dot Sight Orderable Models

List of Orderable Models

  • Primary Arms Holosun HE509-RD Enclosed Solar Powered Reticle Red Dot Sight, ACSS Vulcan Reticle, Black, HE509-RD-ACSS-M , MPN: HE509-RD-ACSS-M , UPC: 810047071785 , Code: 29R-RD-HOLO509-HE509-RD-ACSS-M

Primary Arms Holosun HE509-RD Enclosed Solar Powered Red Dot Sight Unavailable & Discontinued Models

List of Unorderable Models

  • DEMO, Primary Arms Holosun HE509-RD Enclosed Solar Powered Reticle Red Dot Sight, ACSS Vulcan Reticle, Black, HE509-RD-ACSS-M , MPN: HE509-RD-ACSS-M-DEMO , Code: 29R-RD-HOLO509-HE509-RD-ACSS-M-DEMO
  • USED, Primary Arms Holosun HE509-RD Enclosed Solar Powered Reticle Red Dot Sight, ACSS Vulcan Reticle, Black, HE509-RD-ACSS-M , MPN: HE509-RD-ACSS-M-EDEMO , Code: 29R-RD-HOLO509-HE509-RD-ACSS-M-EDEMO-RE-A
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