At The Ready

Vehicle & Home Defense Mount Solutions
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FN 503

FN 503 Car & Truck Gun Mount

$95.00

Free giftLimited time: get a free Lazy Barrel Mount or AR Vice Block with any mount.

A magnetic, quick-draw mount made for the FN 503. It holds your pistol in the same secure position in your truck, car or at home, so it’s ready when seconds matter.

  • Veteran-owned
  • Made in the USA
  • Optic-ready option
  • 25 colors + custom text
Text Color cannot match Tab Color.
Maximum 18 characters.
FreeChoose your free gift

One free gift per mount, included with your order at no charge.

Lifetime warranty Made in the USA Veteran-owned

Build your FN 503 mount

From $95.00 · Made in the USA · Veteran-owned

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FN 503 mount at a glance

Made for
The FN 503. Each mount is designed from that model’s actual slide, for its dimensions and weight.
How it holds
Rare-earth magnets in a premium ABS body keep your FN 503 in the same position on every drive, ready for a quick draw.
Price
Standard $95.00 · Optic-ready $105.00 (for a red dot sight)
Your colors
25 base, tab and text colors and up to 18 characters of custom text, at no extra cost.
In the box
Mounting screws, VHB tape and primer. Watch the installation video.
Where it goes
The side of the center console, a side panel or the lower dash. At home: a nightstand, headboard, desk or wall.
Grip near your knee?
Add the angled mount adapter ($14.99) to angle the mount away from your leg.
Made by
At The Ready, a veteran-owned company in Wylie, Texas. Made in the USA.

See all 8 FN mounts

What customers say

  • FN owner

    5 out of 5 stars

    Best way to legally holster your pistol. I have a FN 509 with a RMR red dot. Always ready with seat belt on and not fighting my IWB holster. I also like you have reminder your gun is there when you exit your truck. 2022 Toyota Tundra by the way.

    Paul · Texas · Mar 2025

  • 5 out of 5 stars

    Perfect! Mounted easily. Holds the side arm well. Exactly what I needed!

    Jeremy P. · Apr 2026

  • 5 out of 5 stars

    It's been mounted and it's awesome. Very satisfied, (At The Ready) just the right words.

    Bernardo S. · Texas · Aug 2024

FN 503 mount FAQ

Is this mount made for the FN 503?

Yes. This is At The Ready’s FN 503 mount, one of the model-specific mounts in the catalog. If your FN 503 carries a light or another accessory, contact At The Ready to check clearance before ordering.

Is the FN 503 mount magnetic?

Yes. It holds the FN 503 with rare-earth magnets, and its body is designed from the FN 503’s actual slide, so the pistol sits in the same position every time you reach for it.

How much does the FN 503 mount cost?

The standard FN 503 mount is $95.00 and the optic-compatible version is $105.00. The optional angled mount adapter is $14.99.

Can I use it with an optic on my FN 503?

Yes. Choose "Optic: Yes" in the options on this page (+$10.00). An optic-compatible selection does not by itself confirm clearance for lights or other accessories.

Where can I install the FN 503 mount?

Common placements include vehicle consoles and panels, bedside areas, desks and walls. Suitability depends on the mounting surface and surrounding space; follow the instructions supplied with your mount.

Can I customize the mount?

Yes. Choose base, tab and text colors from 25 options and add up to 18 characters of custom text.

More FN mounts

Ready when seconds matter

Your FN 503 mount, from $95.00. Questions? Call (469) 833-6651.

Build my FN 503 mount