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Questions & Answers
Is this a RMR or MOS foot print Expert Answer

The Holosun HE509-RD Enclosed Solar Powered Red Dot Reflex Sight uses a proprietary footprint. Inside the box, the 509RD includes an adapter plate that will convert RMR cut slides to accept this optic.

by Ethan, Gear Expert, April 3, 2024
Does it have a "shake on" feature or does it have an on-off switch?

Both shake awake and power controls

by Kn, Verified Owner, December 31, 2024
Customer Reviews
Helpful Positive Review
Holding strong! by Beantown, October 24, 2022
I have this mounted on my wilderness carry pistol. It's a Glock 40 10mm Long-slide. I'm running max pressure loads that rattle your teeth and this optic is holding zero like a rock. I only have a few 100 rounds through it, but this gun gets thrown ar...
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6/8 found this helpful
Helpful Positive Review
Patrol Officer by a336, January 16, 2023
Acss retinal is fantastic. Wish Holosun had more options for it. The gigantic circular does truest assist with quickly bringing the center of the retinal to your eye. Not much of an adjustment period at all.
4/5 found this helpful
Helpful Positive Review
I have several regular 509’s, and love them all. Can’t beat the enclosed nature and no rain, mud, dust getting in sight. Very easy to clean and very sturdy. Bigger buttons are far superior to other Holo offerings. Mount system is a bit tricky, but no...
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2/2 found this helpful
Helpful Positive Review
HE509-RS-ACSS by Mike R., Verified Owner, June 14, 2023
This optic is enclosed so dirt and rain are kept from interfering with the reticle. To mount this optic on a Glock gen 5 9mm (17, 19, 45, 47) you will need to order a MOS adapter plate that is specifically designed for the ACSS model. The adapter pla...
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2/2 found this helpful
Helpful Positive Review
Holosun Enclosed ACSS Vulcan Reflex Sight by Greg, Verified Owner, October 31, 2023
This new enclosed ACSS Vulcan sight is amazing! The arrow sight point and circular outside get you on point quickly. The enclosed case keeps dust out and it does not negatively affect my holster or draw. Love this product. I expect the ACSS Vulcan...
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1/1 found this helpful
Helpful Positive Review
Best reticle for anything and everything by Mix, Verified Owner, March 24, 2023
I slapped this optic on a L2D Slide assembly on my sig 320 carry build. I can’t stress out accurate this sight is out the case. I fired from 7yds, 15yds, 25yds, and 50yds. All shots were on target and on paper with no more than a palm size grouping o...
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1/1 found this helpful
Read All 11 Reviews

14% OFF Red Dot Sights

2ADEALClick to Copy Coupon Code
Eligible models will have a savings offer and the coupon code to use below. Add the item to your cart and enter coupon code for savings on that select model! Limited time only. Cannot be combined with other promotions or offers.
Color:
Black
Reticle:
ACSS Vulcan
Illumination Color:
Red
Condition:
New
Quantity:
1
Red Dot Sights-Footprint:
Not Applicable

Code: 29R-RD-PGR59X-HE509-RD-ACSS-R

MPN: HE509-RD-ACSS-R

UPC: 810047071617

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 Reflex 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 Primary Arms 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. What's so neat about these Holosun HE509 Red Dot Sights 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.

Notes:

The adapter plate for the ''-R'' version is compatible with the most popular aftermarket slide cut in the industry. It is the same footprint as the Holosun 507C, making it compatible with most plate systems found on factory optics ready guns like the Walther PDP, S&W M&P C.O.R.E., CZ Optics Ready, Agency Arms AOS, FN 509 MRD, and Springfield Armory XDM Elite series handguns. It is also one of the most common aftermarket slide cut footprints.

The included 509 adapter plate is not compatible with ZEV or Shadow Systems style RMR interfaces.

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).

WARNING: California`s Proposition 65

Specifications for Primary Arms Holosun HE509-RD Enclosed Solar Powered Red Dot Reflex 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: 1.7 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 Reflex Sight

  • Objective Lens: 17x23
  • Reticle: ACSS VULCAN Illuminated: Red
  • Eye Relief: Unlimited
  • Color:
  • Color:
  • Finish/Material: Aluminum
  • Standard / 507c Adapter Plate
  • 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 Reflex Sight

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

List of Orderable Models

  • Primary Arms Holosun HE509-RD Enclosed Solar Powered Red Dot Reflex Sight, ACSS Vulcan Reticle, Black, HE509-RD-ACSS-R , MPN: HE509-RD-ACSS-R , UPC: 810047071617 , Code: 29R-RD-PGR59X-HE509-RD-ACSS-R
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