Holosun 509 Mounting Plate for FN 509 Tactical
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The Holosun 509PLT-FN509T is the factory adapter plate that bridges FN's 509 Tactical optics-mounting system and Holosun's own 509-series footprint.
The 509 series does not use the RMR pattern and it does not use RMSc either. It has a rear lug of its own, and that is precisely why a dedicated plate exists.
Holosun machine the plate from aluminium and give it a hard anodised finish, cut on one face to the FN 509 Tactical mounting system and on the other to the 509-series pattern. Holosun list the plate as taking their 509-series optics and the AEMS-MACRO, so the same part serves both families.
Fit the plate to the slide first, then the optic to the plate, and the sight sits square and low with no packing or filing. It is worth checking what your slide is actually cut for before ordering, because the FN 509 Tactical mounting system is not the same as the plate systems on other FN models. Holosun do not state which screws are supplied with this plate, so treat the hardware as unconfirmed rather than assumed.
It is cut for FN 509 Tactical slides using FN's own optics-mounting system, with a 509-series or AEMS-MACRO optic on top. Other hosts take other plates in the same family: the 509PLT-FNX45 for the FNX-45 Tactical, the 509PLT-MOS9MM for Glock MOS slides and the 509PLT-507C for RMR-cut slides.
| Optic footprint | Holosun 509 series and AEMS-MACRO |
|---|---|
| Host | FN 509 Tactical optics-mounting system |
| Material | Aluminium |
| Finish | Hard anodised |
| Brand | Holosun |
| MPN | 509PLT-FN509T |
Get the plate right and the optic simply bolts on. Order the 509PLT-FN509T today — imported from the USA with all duties paid by us and dispatched tracked from the UK in 7–10 business days, with nothing to pay on delivery.
Explore more: Enclosed Red Dot Sights, 509T Picatinny Mount 0.82in or browse all Holosun
| Brand | Holosun |
|---|---|
| Part no. | 509PLT-FN509T |
| Category | Optic Mount |
| Barcode | 810047071037 |
£5 tracked UK delivery on every order via Royal Mail Tracked 24. Our products are ordered in from the manufacturer rather than held in UK stock, so please allow 7 to 10 business days (Monday to Friday, excluding bank holidays) from the date of your order for it to reach you. Tracking details are emailed on dispatch. UK delivery only.
You have 30 days from receiving your order to cancel it for any reason, then 14 days to send it back unused and in its original packaging. Faulty, damaged or incorrect items are replaced or refunded and we cover reasonable return postage. Refunds go back to your original payment method within 14 days of receiving the return.
7 to 10 business days from the date of your order. Every order is sent Royal Mail Tracked for a flat £5 and you receive tracking details by email when it is dispatched.
Yes. We list only genuine parts and optics from the brands shown, ordered in from the manufacturer for your order.
Compatibility notes on this page come from the manufacturer. If you are unsure, email us with your make and model before ordering and we will check rather than guess.
Yes. Bundle & Save applies automatically in your basket: 5% off when you buy 2 items, 10% off at 3 items and 15% off at 4 or more. It works across the whole range, so you can mix and match, and there is no code to enter.
Yes — you have 30 days from delivery to cancel for any reason, as long as the item is unused and in its original packaging. See our returns policy for the details.
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