Can I install a red dot on my FN 509 without milling the slide?

Yes. Using a dovetail red dot mount like those from EGW, you can mount optics like the Trijicon RMR or Holosun 507C without any slide modification.

What optics are compatible with this FN 509 mount?

This mount fits red dots such as the Trijicon RMR, Holosun 407C/507C, Vortex Viper, Burris FastFire, and Leupold DPP depending on the selected model.

Do I need suppressor-height sights with a dovetail red dot mount?

Suppressor-height sights are optional but recommended if you want a co-witness sight picture with your red dot.

What hardware comes with the FN 509 red dot mount?

Each EGW mount includes the adapter plate, optic screws, thread locker, and installation instructions.

FN 509 Red Dot Mount – Dovetail & No-Mill Adapter Plates

**EGW Dovetail Sight Mount For the DeltaPoint Pro & Sig P220, P226, P229, P320** $47.49

**EGW Viper/Venom Sig Sauer P220-P229, P320 Red Dot Mount (fits Burris FastFire and Docter)** $47.49

**EGW Sight Mount For the Vortex Razor for Sig P220-229, 320** $47.49

**EGW Dovetail Mount for the Trijicon RMR, Holosun 407c / 507c for Sig Sauer P220, P226, P229, P320** $47.49

FN 509 Red Dot Mount – Dovetail & Optic Adapter Plates

Looking to mount a red dot sight to your FN 509 without slide milling? At Mounts Plus, we carry premium red dot mounts for the FN 509, including dovetail adapter plates from EGW that allow you to install leading optics like the Trijicon RMR, Holosun 507C, Vortex Viper, and Burris FastFire.

These mounts are the perfect solution for shooters who want a low-profile, secure, no-gunsmithing option to add a red dot to their pistol. Whether you're upgrading for EDC, competition, or tactical carry, we have mounting solutions for both factory and non-optic-cut slides.

✅ Why Choose a Dovetail Red Dot Mount for FN 509?

🔩 No Slide Milling Required – Installs in place of rear sight dovetail
🔒 Secure Mounting Platform – Built for red dot stability and zero retention
⚙️ Precision Machined – 6061-T6 aluminum or steel with hardcoat finish
🧰 Includes Mounting Hardware – Screws and wrench included
🧱 Works with Top Red Dots – RMR, Holosun 407C/507C, Viper, DPP, and more

✔️ Mount a red dot without voiding your warranty or modifying your slide.

🛒 Best-Selling FN 509 Red Dot Mounts

Product Title	Compatible Optics	Price
EGW Dovetail Sight Mount for Trijicon RMR / Holosun 507C	RMR, 507C, 407C	$47.49
EGW Viper/Venom Mount for FN 509	Vortex Viper, Venom, Burris FastFire	$47.49
EGW Sight Mount for DeltaPoint Pro	Leupold DPP, SIG Romeo1, EOTech EFLX	$47.49
EGW Mount for Vortex Razor	Vortex Razor	$47.49

🔗 All mounts install via the factory rear sight dovetail and include all necessary screws.

🔧 Installation Overview

Remove the factory rear sight from your FN 509 slide
Insert EGW dovetail adapter into the rear sight slot
Align red dot on plate and fasten with included screws
Apply thread locker and torque to ~12–15 in-lbs
Confirm zero at the range

🛠️ Need tools? Shop gunsmithing tools here.

🔍 Compatible FN Pistols

✅ FN 509
✅ FN 509 Compact
✅ FN 509 Midsize
✅ FN 509 Tactical
✅ FN 509 LS Edge

⚠️ For optic-ready models, use optic plates instead.

🧠 Frequently Asked Questions (FAQ)

Q: Can I mount a red dot on my FN 509 without an optics cut?
A: Yes. Use a dovetail mount to attach red dots without milling or slide modification.

Q: Will this work with the Trijicon RMR or Holosun 507C?
A: Yes. EGW makes specific plates for both RMR and 507C footprints.

Q: Do I need suppressor-height sights with this setup?
A: They’re optional. Co-witnessing depends on your dot height and personal preference.

Q: What if my FN 509 already has an optics cut?
A: We recommend FN 509 optic plates for factory-cut slides.

🛒 Why Buy From Mounts Plus?

✔️ Authorized EGW Dealer
🚚 Fast USA Shipping
📞 Expert Customer Support
🔁 30-Day Return Policy
🔧 Precision Mounting Solutions Since 1994

Mount your red dot the right way — fast, secure, and no gunsmith required.

FN 509 Red Dot Mount – Dovetail & No-Mill Adapter Plates | Mounts Plus