Holosun
Holosun HE507K X2 Green Dot Sight ACSS Vulcan Reticle – HE507K-GR-X2-ACSS
£379.99
£399.99
Save 5%
Tax included. Shipping calculated at checkout.
In stockSKU: HE507K-GR-X2-ACSS
- Estimated delivery within 7–10 business days
- Secure checkout
Added to your basket.
View basket →
VisaMastercardAmexPayPalApple PayGoogle Pay
Bundle & Save
Buy 2
Save 5%
£759.98
£721.98
£360.99 each
Most Popular
Buy 3
Save 10%
£1,139.97
£1,025.97
£341.99 each
Best Value
Buy 4
Save 15%
£1,519.96
£1,291.96
£322.99 each
UK DispatchShipped from the UK
Secure CheckoutProtected payments
Free UK ShippingOn every order
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 HE507K X2 Green Dot Sight with the patented ACSS Vulcan reticle is a compact open-emitter pistol green dot sight for subcompact and slimline pistols. The ACSS Vulcan pairs a precise green 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 red ACSS version? See the HS507K X2 ACSS (red). Want a simple dot instead of ACSS? The HE407K (2 MOA green). Browse all Holosun pistol dots, green dot sights, and RMSc-footprint optics; learn the reticle in our ACSS guide.
Ideal For
- Concealed carry and subcompact pistols
- Slimline handgun platforms
- Shooters wanting fast ACSS reacquisition in green
Key Features
- ACSS Vulcan reticle (green 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 (green 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 HE507K X2 green 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 aiming point inside a large ring — the ring draws your eye to centre for fast reacquisition, while the chevron tip gives a precise hold.
What footprint is it?
The Holosun K (RMSc) footprint for micro-compact optics-ready slides.
Green or red ACSS?
This is the green version; the HS507K X2 ACSS is the red 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.
You may also like
More from this category, hand-picked for performance.
