2 Best Red Dots for FN 509 Tactical, LS Edge & Compact [Updated 2021]

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Fn 509 tactical trijicon rmr gif

FN 509 Tactical is now optic ready right out of the box.

In this guide, let's check out some of the best red dots for FN 509 Tactical & for the Compact CCW models on the market.

Some are great for range use and some are great for a carry optic.

Don't waste money on a poor optic that will lose zero, get the ones that are already proven to work!

Let's check it out...

2 Best Red Dot Sights for FN 509 Tactical & Compact

Trijicon SRO - Largest FOV

Why we picked this one - Want to acquire the red dot fast regardless of your sight picture is off-center? The SRO is by far the best pistol optic to get for the FN 509, FN 509 LS Edge, and other handguns.

Bigger Window  - Get on target fast, and reacquire the sight picture fast after follow-up shots. Spend no time looking for the reticle or get lost in the window during follow up shots.

Easier Battery Access - Load/Replace battery right from the top! No sight removal or re-zero required

Better Follow Up - Increased sight acquisition speed including consistent fast follow-up shots without losing the dot inside the window.

Same RMR mounting footprint - Using the exact Trijicon RMR mounting footprint keeps everything compatible without having to buy special accessories.

Holosun 507C X2 - Best Overall

fn 509 tactical with holosun 507c

Why people love Holosun 507C X2 - The Holosun HE507C X2 does the same thing the original model does but better in every way that improved the shooting experience while still remains affordable.

Uses RMR Footprint - No special adapter or milling required! Just use the same Trijicon RMR adaptor plate that comes with the FN 509 Tactical.

Bigger Buttons - Adjustment buttons in the dark or day easily even with big fingers

Near Infinite Battery life - 50,000 hours of battery life plus solar panel backup power if the battery goes out.

Side Loading Battery - This eliminates the need to remove the sight for battery swap and re-zeroing. Access the battery from the side tray

Solar Power BackUp - Solar fail-safe power kicks in immediately when the battery dies, so the optic will always remain on and ready.

At this price point, which is the lowest it's ever been for a Trijicon RMR alike sight, You'll save a ton of money. Just make sure to click the button below for the best deal.

Common FAQ

FN 509 Tactical Optics Compatibility

The FN Low Profile Optics Mounting System is compatible with almost all micro red dot sights on the market. The included package contains mounting plates and screws for some of the most popular optics such as:

  • Vortex Viper, Razor, Venom
  • Docter Optic
  • Trijicon RMR, SRO
  • C-More STS2
  • Burris
  • Leupold DeltaPoint Pro

Best FN 509 Slide Milling Service

If you have the non optic ready FN 509, you can send the slide the following companies to get worked on: 

  • Chpws
  • ATEI
  • PMM
  • Jagerwerks

They are by far the best quality slide milling services with the best craftsmanship at a decent price.

Skip The Wait Time & Buy Optic Ready FN509

fn 509 LS edge with trijicon rmr

Buy optic ready FN 509 Tactical or FN 509 LS Edge.

No wait time, they're optic ready right out of the box!


Sverre B

A prior military-civilian employee in government contracting 13 years of experience in 3D Printing and manufacturing. 6 years of experience with firearm tooling and hunting