The Holosun 509 Adapter for FNX-45, Black is a mounting accessory that fits FNX-45.
The 509PLT-FNX45 adapter plate mounts Holosun 509 series enclosed optics to FNX-45 Tactical optic-ready slides, providing a secure and streamlined interface for integrating enclosed red dot technology onto the platform.
How It Compares
Also compare the 509 Adapter for Picatinny, Low Mount, 509 Adapter for Picatinny, Lower 1/3 Mount and 509 Adapter for HS507C Footprint. Browse all optics Accessories and the full Holosun range. New to this? Read our guide: Caring for Your Optics: Cleaning and Off-Season Storage.
Ideal For
- FNX-45 Tactical optic-ready slides
- Mounting a Holosun 509 series enclosed optic on an FNX-45
- FNX-45 owners moving to an enclosed red dot
Key Features
Key Features
- FNX-45 Tactical Compatibility Designed specifically for FNX-45 Tactical optics ready pistol slides for proper fit and reliable installation.
- Holosun 509 Optic Support Provides direct mounting compatibility with Holosun 509 series enclosed pistol optics.
- Precision Machined Interface Engineered to ensure proper optic alignment and consistent fitment on the pistol slide.
- Low Profile Mounting Design Maintains proper optic height while preserving the handling characteristics of the FNX-45 platform.
- Durable Steel Construction Strong steel adapter plate provides enhanced durability for duty, defensive, and range use.
- Corrosion Resistant Finish Protective surface treatment helps resist wear and environmental exposure.
- Stable Optic Mounting Platform Creates a solid interface between optic and slide to help maintain zero under recoil.
- Purpose Built Fitment Designed specifically for the FNX-45 Tactical optics ready system to ensure reliable compatibility.
- Included Mounting Hardware Supplied hardware allows secure installation of compatible Holosun 509 optics.
- Compatible with FNX-45 Optic Cut Slides
- 6061 aircraft aluminum construction
- Corrosion-resistant anodized finish
Compatibility & Fitment
Fits FNX-45. Not sure it fits? Contact us before you order and we will check for you.
Technical Specifications
Brand | Holosun |
Type | Mounting Accessory |
Model | 509 Adapter |
Color | Black |
MPN | 509PLT-FNX45 |
UPC | 810047071044 |
US Shipping & Support
Genuine Holosun, brand new and covered by the manufacturer's warranty. Shipping is free on US orders of $99 or more, and smaller orders ship from $6.95. Questions about fit, mounting or which option suits your setup? Our team is glad to help before and after your purchase.
Frequently Asked Questions
What does the 509 Adapter fit?
Fits FNX-45.
Is this a genuine Holosun product?
Yes. It is a new, genuine Holosun product sourced through an authorized US distributor.
How much is shipping?
Shipping is free on US orders of $99 or more. Orders under $99 ship at a flat rate from $6.95 to $9.95, depending on the order total.
