The C&H Precision Weapons FN509 adapter for Holosun 509T red dot sight gives FN 509, 510, and 545 pistol owners a direct path to modern optics mounting. If you're running an FN duty or carry gun and want to add a Holosun 509T—one of the most popular compact pistol red dots on the market—this precision-machined plate is what bridges the gap. It's engineered to handle the exact footprint mismatch between your slide and the 509T's mounting pattern, so you get a clean, co-witnessed setup without gunsmithing.

C&H Precision manufactures these adapters in-house at their Georgia shop using HAAS CNC machinery, which means tight tolerances and consistency. Every plate clears multiple quality checks before it ships. That attention to detail matters when you're bolting an optic to your carry gun—you need rock-solid repeatability, not guesswork. The stainless steel construction handles the abuse of draw-stroke cycling and weather without flex or corrosion.

Installation is straightforward for anyone comfortable swapping a slide plate or working with small fasteners. The adapter uses stainless steel mounting hardware, so nothing is going to seize or fail prematurely. Whether you're building a duty rig, a competition pistol, or a reliable carry gun with quality glass, this adapter is the precision link between your FN platform and Holosun optics.

Key Features

• Converts FN 509, 510, and 545 pistols to Holosun 509T mounting pattern
• Precision CNC-machined from stainless steel
• Includes stainless steel mounting hardware
• Manufactured and quality-checked in Georgia
• Tight tolerances for reliable, zero-holding mounting

Specifications

Brand	C&H Precision Weapons
Compatibility	FN 509, FN 510, FN 545 / Holosun 509T
Material	Stainless Steel
Hardware	Stainless Steel Mounting Hardware
Manufacture	USA (Georgia)

Frequently Asked Questions

Will this adapter work with my FN 509 pistol and Holosun 509T?

Yes. This adapter is specifically designed to convert FN 509, 510, and 545 pistols to accept the Holosun 509T mounting footprint.

What mounting hardware is included?

The adapter comes with stainless steel mounting hardware required for installation.

Is this made in the USA?

Yes. C&H Precision Weapons manufactures and quality-checks each adapter at their facility in Georgia.

Will the adapter hold zero during carry or competition use?

The adapter is precision CNC-machined to tight tolerances with stainless steel construction, designed to provide a secure, repeatable mount for your optic. Proper installation with the included hardware ensures zero stability.