Holosun
Holosun 509T Picatinny Mount 1.63in Lower 1/3 – 509MNT-1.63-PIC
£64.99
Tax included. Shipping calculated at checkout.
In stockSKU: 509MNT-1.63-PIC
- Estimated delivery within 7–10 business days
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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 509MNT-1.63-PIC is the genuine 1.63in Picatinny mount for 509T-footprint enclosed red dots (HS509T, HE509T-RD/GR), setting the dot at lower-1/3 co-witness on AR-15 flat-top rails.
Fitment
Want the dot lower? Choose the 0.82in low version. Browse enclosed red dots and all mounts; our mount height chart and co-witness guide explain the choice.
Key Features
- Genuine Holosun mount for 509T footprint
- 1.63in centreline — lower-1/3 co-witness on AR-15
- Clamps to any Picatinny (1913) rail
Technical Specifications
| Optic Footprint | Holosun 509T (HS509T / HE509T) |
| Height | 1.63in — lower-1/3 co-witness |
| Rail | Picatinny (MIL-STD-1913) |
| MPN / UPC | 509MNT-1.63-PIC / 810047071082 |
What's Included
- Holosun 1.63in Picatinny mount with hardware
UK Delivery & Support
UK-stocked and dispatched tracked from our UK warehouse — no import duties or customs delays — backed by UK-based support.
Frequently Asked Questions
Which optics fit?
Optics with the Holosun 509T footprint — HS509T and HE509T-RD/GR.
Will my iron sights still work?
Yes — at 1.63in the irons appear in the lower third of the window as a backup.
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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