FN 509 Accessories – Tactical Upgrades & Aftermarket Parts That Deliver

Whether you're carrying the FN 509 for personal defense, duty, or competition, upgrading your setup with the right accessories can elevate performance, comfort, and reliability. At Mounts Plus, we stock only battle-tested FN 509 parts from the most trusted brands in the industry — no hype, no gimmicks.

From red dot mounts to recoil systems, triggers, and concealment holsters, every upgrade here is carefully selected for fit, function, and durability.

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🔧 Top FN 509 Upgrades You Can Trust

Here’s a look at our most popular aftermarket parts for the FN 509 platform:

✅ Red Dot Mounting Plates

Mount optics like Trijicon RMR, Holosun 507C, or Leupold DPP with confidence using C&H Precision adapter plates. These plates are machined to tight tolerances and offer a rock-solid mounting platform — no milling needed on optic-ready slides.

✅ Trigger Kits

Upgrade your trigger with Apex Tactical flat-faced trigger kits for a smoother pull, crisp break, and shorter reset. Ideal for competitive shooting or EDC users who want more control.

✅ Recoil Reduction Systems

Reduce muzzle rise and felt recoil with DPM Systems’ recoil spring kits. These multi-spring systems improve shot-to-shot recovery and durability, especially on high-round-count setups.

✅ Concealed Carry Holsters

Carry comfortably with Crucial Concealment IWB/OWB holsters — optics-ready, with sweat guards and adjustable cant. Built specifically for FN 509, 510, and 545 frames.

✅ Night Sights & Suppressor-Height Sights

AmeriGlo and Trijicon night sights enhance low-light targeting. Pair them with a red dot for co-witness setups on tactical builds.

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⚙️ Compatible FN 509 Models

All accessories listed here are compatible with:

• FN 509

• FN 509 Tactical

• FN 509 Compact

• FN 509 LS EDGE

• FN 510 & 545 (where labeled)

Check individual product listings for exact slide compatibility, especially if your firearm is optic-ready.

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🏆 Why Buy FN 509 Accessories from Mounts Plus?

• 🛠️ Authorized Dealer of Apex Tactical, C&H Precision, AmeriGlo & more

• 🚀 Fast U.S. Shipping on all in-stock items

• 🎯 Shooter-Tested Gear curated by experienced professionals

• 🔁 30-Day Return Policy for worry-free buying

• 🧠 Expert Support to help you find the perfect upgrade

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🔄 Accessory Categories at a Glance

Category	Popular Options
Red Dot Mounts	RMR, Holosun 507C, DPP Plates
Triggers	Apex Flat-Faced Trigger Kit
Recoil Systems	DPM Multi-Spring Kits
Holsters	IWB / OWB with optic-cut and tall sight relief
Sights	AmeriGlo Night Sights, Suppressor Height

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❓ Frequently Asked Questions (FAQ)

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

Yes — if your FN 509 is optic-ready, you can use adapter plates like those from C&H Precision to install popular optics without any slide modifications.

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Which accessories are compatible with the FN 509 Compact or LS EDGE?

All accessories on this page note slide/frame compatibility. Most plates, triggers, holsters, and recoil kits are cross-compatible across the 509, 510, 545, Compact, and LS EDGE models.

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What's the best FN 509 trigger upgrade?

The Apex Action Enhancement Kit is widely regarded as the top trigger upgrade for the FN 509 platform. It reduces pull weight and improves reset for better control and speed.

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Do these accessories require professional installation?

Red dot mounts, triggers, and recoil systems are generally user-installable with basic tools. However, for duty use or defensive carry, we recommend professional installation to ensure proper fit and function.

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What’s the benefit of upgrading the recoil system?

A quality recoil spring system, like those from DPM Systems, helps reduce felt recoil, improve slide timing, and extend component life — especially valuable for suppressor use or competition setups.

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