Description
FN took everything people love about the 509 Tactical and scaled it up for 10mm Auto, and the result is one of the most complete big-bore pistols you can buy without touching the aftermarket. This Flat Dark Earth version runs a 4.71-inch cold hammer-forged barrel with a recessed target crown and .578×28 threading, so hanging a suppressor or compensator on it takes about thirty seconds instead of a trip to the gunsmith. At 32 ounces and 8.3 inches overall, it has enough heft to soak up 10mm recoil while still balancing like a proper duty pistol.
Optics Ready the Way the 510T Should Be
The slide comes cut for red dots using FN's low-profile optics mounting system, which covers most of the popular footprints out there, from RMR and Holosun patterns to the DeltaPoint Pro. Suppressor-height tritium night sights ride in steel dovetails and co-witness through most micro red dots, so you get a usable sight picture day or night whether you run glass or not. Front and rear slide serrations plus protective sight wings give you plenty of purchase for racking, even with an optic and can mounted.
A 10mm Frame Built for Control
Full-power 10mm can get away from you fast on a poorly designed grip, and FN clearly knew it. The frame uses multiple texture zones to stay locked in your hand, interchangeable backstraps let you fit it to your mitts, and the roomy trigger guard works fine with gloves on for cold weather or backcountry trips. The slide stop and magazine release are fully ambidextrous, which makes this a legitimately left-hand-friendly pistol rather than one that tolerates southpaws.
What the FN 510 Tactical Does Best
This is the pistol for someone who wants one 10mm that covers woods carry, home defense, and suppressed range days without a parts list. This model ships with two 10-round magazines, a precision-tuned trigger, a polished feed ramp for reliable feeding with hot loads, and a Picatinny rail up front for your light. It shows up ready to work, and that is exactly the point.
Key Specifications
- Model: FN 510 Tactical (510T)
- Manufacturer Part Number: 66-101378
- UPC: 845737015619
- Caliber: 10mm Auto
- Action: Striker Fired, Semi-Auto
- Capacity: 10+1
- Barrel Length: 4.71", Cold Hammer-Forged, Target Crowned
- Thread Pattern: .578×28
- Overall Length: 8.3"
- Weight: 32 oz
- Sights: Suppressor-Height Tritium Night Sights, Steel Dovetail
- Slide: Optics Cut, Front and Rear Serrations
- Frame: Polymer with Picatinny Accessory Rail
- Controls: Ambidextrous Slide Stop and Magazine Release
- Finish: Flat Dark Earth
- Twist Rate: 1:16 RH
What’s Included
- FN 510 Tactical 10mm pistol
- Two 10-round magazines
- MRD optics mounting plates
- Interchangeable backstraps
- Soft zippered case
- Owner's manual
Frequently Asked Questions
Which red dots fit the FN 510 Tactical's optics cut?
The 510 Tactical uses FN's low-profile optics mounting system with included adapter plates that cover most popular footprints. That includes the Trijicon RMR and SRO, Holosun 507/508 series, Leupold DeltaPoint Pro, and Vortex Venom, among others. No gunsmithing is needed, just pick the right plate and mount your optic.
Can I run a suppressor on the FN 510 Tactical out of the box?
Yes, the 4.71-inch barrel is threaded .578×28, which is the common standard for 10mm and .45 caliber pistol suppressors. Just make sure your suppressor has the matching piston or booster assembly. The suppressor-height tritium sights are tall enough to see over most cans, too.
How does the 510 Tactical handle full-power 10mm recoil?
Better than most. At 32 ounces with a full-size grip, multiple texture zones, and interchangeable backstraps, it was designed from the ground up around the 10mm cartridge rather than adapted from a 9mm. Most people find it noticeably more controllable than lighter 10mm pistols, especially with hot woods-carry loads.
Is this version of the FN 510T left-hand friendly?
Very much so. Both the slide stop and the magazine release are fully ambidextrous from the factory, mirrored on both sides of the frame. Lefties get a completely functional pistol without swapping any parts.





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