Holosun HS507K X2 Red Dot Sight ACSS Vulcan Reticle
£399.99
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Holosun HS507K X2 Red Dot Sight ACSS Vulcan Reticle
£399.99
At a glance
- Sight type
- Open reflex
- Reticle
- ACSS
- Footprint
- RMSc / Holosun K
- Fits
- Pistol
- Delivery within 10 business days
- Estimated delivery:
- 30-day returns
- UK-based specialist support
- Pay in 3 interest-free payments of £133.33 with Klarna
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Details
Description
Holosun HS507K-X2 Red Dot Sight takes the ACSS Vulcan reticle down to carry size: a red 3 MOA dot inside a 230 MOA circle, on a 0.58 × 0.77 in window. The circle is the part your eye catches when the pistol comes up close in; the 3 MOA dot is what you use once there is time to aim properly.
How It Compares
Prefer the button-switchable reticles? That is the HS507K-X2 MRS. The green-emitter ACSS is the HE507K-X2 ACSS. Our pistol red dot picks put the options side by side.
Ideal For
- Glock 43X/48, and other K-cut subcompacts
- Concealed carry where bulk is the limiting factor
- Shooters who want a circle-dot without a reticle menu
- A step up from a plain carry dot
Key Features
- ACSS Vulcan reticle: red 3 MOA dot inside a 230 MOA circle
- 0.58 × 0.77 in window in a subcompact body
- 12 brightness settings: 10 daylight plus 2 night-vision
- Shake Awake motion activation
- 1 MOA clicks; ±30 MOA of travel
- Side-loading CR1632, up to 40,000 hours
- 7075 aluminium; Holosun K footprint (modified Shield RMSc)
Technical Specifications
- SKU / MPN / UPC: SKU HS507K-X2-ACSS / MPN HS507K-X2-ACSS / UPC 810047072393
- Reticle: ACSS Vulcan (red 3 MOA centre dot with a 230 MOA outer circle)
- Magnification: 1x, parallax-free, unlimited eye relief
- Viewing window: 0.58 × 0.77 in (15 × 20 mm)
- Brightness settings: 12 (10 daylight + 2 night-vision), Shake Awake
- Windage / elevation per click: 1 MOA
- Total adjustment travel: ±30 MOA (windage & elevation)
- Battery: 1 × CR1632, side-loading, up to 40,000 hours
- Housing: 7075 aluminium
- Footprint: Holosun K (modified Shield RMSc)
What's Included
- Holosun HS507K-X2 red dot sight with ACSS Vulcan reticle
- Mounting hardware and fitting tool
- CR1632 battery
Why buy from Red Dot Sight UK
A UK specialist in red dot sights, holographic sights and magnifiers from Trijicon, EOTech, Holosun and SIG Sauer — genuine optics, secure checkout and UK-based support.
The detail
Technical Specifications
| Sight type | Open reflex |
|---|---|
| Dot colour | Red |
| Reticle | ACSS |
| Footprint | RMSc / Holosun K |
| Fits | Pistol |
| Brand | Holosun |
| Type | Red Dot Sight |
| SKU | HS507K-X2-ACSS |
Fitment
Compatibility
Mounting Footprint
Confirm the optic's footprint matches your firearm's cut or plate.
Rail Compatibility
Pair with a matching Picatinny mount for rifle and carbine platforms.
Always confirm your firearm's optic cut or rail matches the footprint before purchase. Our guide to red dot sight footprints explains how to match an optic to your firearm. If unsure, contact our team for fitment advice.
Help & guidance
Product FAQs
How does the circle-dot reticle help on the HS507K-X2 ACSS?
On the Holosun HS507K-X2 ACSS the 230 MOA circle is large enough to catch your eye during the draw, while the 3 MOA dot inside it stays fine enough for a deliberate shot. It gives you a circle-dot without a reticle menu to scroll through.
Which slide cut does the HS507K-X2 ACSS need?
The Holosun HS507K-X2 ACSS uses the Holosun K footprint, which is a modified Shield RMSc pattern. It suits K-cut subcompacts such as the Glock 43X and 48.
How long does the battery last in the HS507K-X2 ACSS?
The side-loading CR1632 in the Holosun HS507K-X2 ACSS is rated up to 40,000 hours. Shake Awake shuts the dot down when the pistol is still.
Is the HS507K-X2 ACSS night-vision compatible?
Yes, two of the 12 brightness settings on the Holosun HS507K-X2 ACSS are night-vision levels. The other 10 are daylight brightnesses.
What reticle does the Holosun HS507K-X2 ACSS use?
The HS507K-X2 ACSS uses the ACSS Vulcan reticle, a red 3 MOA centre dot inside a 230 MOA outer circle. It brings that reticle down to carry size.
How big is the window on the HS507K-X2 ACSS?
The Holosun HS507K-X2 ACSS has a 0.58 x 0.77 in window, which is 15 x 20 mm, in a subcompact body. That keeps bulk down for concealed carry.
How many brightness settings does the HS507K-X2 ACSS have?
The Holosun HS507K-X2 ACSS has 12 brightness settings in total. Ten are daylight levels and two are night-vision levels.
What are the turret clicks on the HS507K-X2 ACSS?
Windage and elevation adjust in 1 MOA clicks on the Holosun HS507K-X2 ACSS. Total travel is plus or minus 30 MOA in both windage and elevation.
Is the Holosun HS507K-X2 ACSS magnified?
No, the HS507K-X2 ACSS is a 1x sight that is parallax-free with unlimited eye relief. The housing is 7075 aluminium.
What is included with the HS507K-X2 ACSS?
The box contains the Holosun HS507K-X2 red dot sight with ACSS Vulcan reticle, mounting hardware with a fitting tool, and a CR1632 battery.
What are the alternatives to the HS507K-X2 ACSS?
If you prefer button-switchable reticles, the HS507K-X2 MRS is the alternative, and the green-emitter version of this reticle is the HE507K-X2 ACSS. The HS507K-X2 ACSS itself is the fixed red ACSS Vulcan option.
How long will my Holosun HS507K-X2 ACSS take to arrive?
Estimated UK delivery is 10 business days. It ships as genuine UK stock, so there are no import fees to pay on arrival, and checkout is secured by Shopify.
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Further reading
Guides picked for this optic - the brand range, the format, and how to set it up.
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Shipping, Returns & Warranty
Orders are dispatched from the UK. Full details, options and timescales are on our shipping policy.
If something isn't right, our returns policy explains how to arrange a return or exchange.
Every order is covered by our 30-day returns policy and your statutory consumer rights. Some products are also supplied with a manufacturer warranty; that cover is provided by the manufacturer rather than by Red Dot Sight UK and varies by brand.