Holosun
Holosun HS507K X2 Red Dot Sight ACSS Vulcan Reticle – HS507K-X2-ACSS
£399.99
Tax included. Shipping calculated at checkout.
In stockSKU: HS507K-X2-ACSS
- Estimated delivery within 7–10 business days
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UK DispatchShipped from the UK
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Genuine ProductsAuthorised UK retailer
Free UK shipping on all orders. Estimated delivery within 7–10 business days. 30-day returns on unused items in their original packaging.
Covered by the manufacturer's warranty. Contact our UK support team for any warranty assistance.
A UK-based specialist retailer of premium optics and tactical gear from trusted global brands — with no import fees and secure checkout.
Description
The Holosun HS507K X2 Red Dot Sight with the patented ACSS Vulcan reticle is a compact open-emitter pistol red dot sight for subcompact and slimline pistols. The ACSS Vulcan pairs a precise red chevron aiming point with a large outer reference circle, guiding your eye back on target fast for rapid reacquisition.
On the Holosun K (RMSc) footprint, it carries low and light (1.0 oz), with Shake Awake and last-setting recall, a side-loading CR1632 (up to 50,000 hours), and a rugged IP67 aluminium housing rated to 5000G.
How It Compares
Prefer the green ACSS version? See the HE507K X2 ACSS (green). Want a simple dot instead of ACSS? The HS407K (6 MOA red). Browse all Holosun pistol dots and RMSc-footprint optics; learn the reticle in our ACSS guide and see the best pistol red dots.
Ideal For
- Concealed carry and subcompact pistols
- Slimline handgun platforms
- Shooters wanting fast ACSS reacquisition
Key Features
- ACSS Vulcan reticle (red chevron + circle)
- RMSc / Holosun K footprint; 1.0 oz
- Shake Awake with last-setting recall
- Up to 50,000 h on side-loading CR1632
- IP67, 5000G-rated aluminium housing
Technical Specifications
| Reticle | ACSS Vulcan (red chevron) |
| Magnification | 1x |
| Footprint | Holosun K (RMSc) |
| Battery | CR1632 — up to 50,000 h |
| Brightness | 12 (10 day / 2 NV) |
| Adjustment | 1 MOA/click, ±30 MOA, parallax-free |
| Dimensions / Weight | 1.6 × 0.98 × 0.95 in / 1.0 oz |
| Waterproof | IP67 |
What's Included
- Holosun HS507K X2 red dot sight
- CR1632 battery, adjustment tool, mounting hardware, manual
UK Delivery & Support
UK-stocked and dispatched tracked from our UK warehouse — no import duties or customs delays — backed by UK-based support and Holosun's limited lifetime warranty.
Frequently Asked Questions
What is the ACSS Vulcan reticle?
A chevron inside a large ring — the ring pulls your eye to centre for speed, the chevron tip gives a precise aiming point.
What footprint is it?
The Holosun K (RMSc) footprint for micro-compact optics-ready slides.
Red or green ACSS?
This is the red version; the HE507K X2 ACSS is the green equivalent.
Why buy from Xtreme Tactical
UK-Based Retailer
Dispatched from the UK.
No Import Fees
Order without overseas customs or surprises.
Secure Checkout
Protected payment options on every order.
Specialist Support
Expert product knowledge when you need it.
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