C&H Precision FN 509/510/545 V4 Optic Adapter Plate
C&H Precision Weapons
$75.69
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C&H Precision Weapons
C&H Precision FN 509/510/545 V4 Optic Adapter Plate
The C&H Precision Weapons FN 509/510/545 V4 Adapter Plate for the EPS optic is a precision-machined, American-made mounting solution that delivers rock-solid optic installation with an unmatched level of fitment accuracy and hardware durability.
- Precision machined on HAAS CNC machines to the tightest tolerances available
- Compatible with FN 509, FN 510, and FN 545 pistol platforms
- Constructed from lightweight, aircraft-grade 6061 aluminum alloy
- MIL-SPEC Type III hard anodized finish for superior corrosion resistance
- Patented 416 stainless steel T-Posts provide six to seven threads of engagement
- All mounting hardware is individually replaceable — no need to replace the entire plate
Who This Is For
This adapter plate is ideal for FN 509, 510, or 545 owners who want to mount a Holosun EPS or EPS Carry optic with confidence. Whether you're building a duty pistol, a competition setup, or a serious home-defense firearm, the C&H Precision V4 plate delivers the kind of repeatable, zero-shift performance that competitive shooters and law enforcement professionals demand. It's also a smart choice for anyone who wants the peace of mind of replaceable hardware rather than a disposable mounting system.
Specifications
| Brand | C&H Precision Weapons |
|---|---|
| Compatible Pistols | FN 509, FN 510, FN 545 |
| Compatible Optic | Holosun EPS / EPS Carry |
| Plate Version | V4 |
| Material | 6061 Aluminum |
| Finish | MIL-SPEC Type III Hard Anodized |
| T-Post Material | 416 Stainless Steel |
| Thread Engagement | 6–7 Threads |
| Includes | 1x Optic Plate, 2x M3 Plate Mounting Screws, T-Posts |
| Hardware | Fully Replaceable |
| Manufactured In | USA (Coastal Georgia) |
Frequently Asked Questions
Which optics are compatible with this adapter plate?
This plate is specifically designed to mount the Holosun EPS and EPS Carry red dot optics onto FN 509, FN 510, and FN 545 pistols. It is not intended for use with other optic footprints such as RMR, DeltaPoint Pro, or Shield RMSc. If you're running a different optic, C&H Precision offers additional plates for a wide variety of footprints.
Will this plate affect my pistol's co-witness or sight height?
The C&H Precision V4 plate is designed to sit the EPS optic at a height that is compatible with suppressor-height iron sights for a lower-third co-witness. Standard factory sights on the FN 509 series may not provide a usable co-witness, so upgrading to suppressor-height sights is recommended for shooters who want a backup iron sight picture through the optic.
What makes the replaceable T-Post system better than standard mounting screws?
Unlike conventional adapter plates that rely on standard screws threading directly into aluminum, C&H Precision's patented stainless steel T-Posts are pressed into the plate and provide six to seven full threads of engagement for the optic's mounting screws. This dramatically reduces the risk of stripping threads under recoil. Because the T-Posts and all mounting hardware are individually replaceable, you never have to discard the entire plate if a component is damaged — saving you time and money in the long run.
