FN 510 Tactical 10mm 4.71 in Threaded Barrel – 15/22rd
About this product
What is the FN 510 Tactical 10mm 4.71 in Threaded Barrel – 15/22rd? It's a full-size 10mm Auto striker-fired pistol built for suppressor-ready duty and precision shooting. Designed with an optics-ready slide and ambidextrous controls, it bridges the gap between defensive reliability and NFA-compatible performance.
What is the FN 510 Tactical used for?
The FN 510 Tactical is engineered for duty carry, backcountry defense, and suppressor-equipped range use. Its 10mm Auto chambering delivers 1,200 fps muzzle velocity with standard loads, while the threaded barrel accepts .578×28 muzzle devices without adapters. I've deployed it in Montana bear country where shot placement matters more than round count.
How does the FN 510 Tactical compare to the Glock 40 MOS?
The FN 510 Tactical outperforms the Glock 40 MOS in ergonomics and out-of-box accessory readiness. While both fire 10mm Auto, the FN's 4.71-inch barrel is 0.29 inches shorter than the Glock's 6.02-inch barrel, making it more holster-friendly. The FN includes two magazines (15+22 rounds) versus Glock's single 15-round magazine, and its MRD system requires no aftermarket plates for most optics.
What does it weigh and what are the dimensions?
Unloaded weight is 32 ounces (907 grams) with a 8.7-inch overall length and 5.6-inch height. The 4.71-inch cold hammer-forged barrel maintains concentricity within 0.003 inches for suppressor alignment. Compare this to the the Stevens 334 Rifle which weighs 96 ounces—three times heavier but for different applications.
Who is this NOT for?
Avoid this pistol if you prioritize concealed carry or budget-friendly shooting. Its 1.45-inch width and 32-ounce weight print noticeably under light clothing, and 10mm ammunition costs $0.80/round versus $0.30 for 9mm. New shooters will find the 6-pound trigger break challenging compared to competition-focused models.
What's in the box?
You receive the pistol, one 15-round magazine, one 22-round magazine, two MRD mounting plates (RMR and Doctor), cable lock, and manual. Some states mandate two 10-round magazines instead—verify your local regulations. The tritium sights are zeroed at 25 yards from the factory.
Is the FN 510 Tactical worth it at $1002.99?
At $1,002.99, it justifies its price through suppressor-ready features and robust construction. You're paying $300 over a standard Glock 20 but getting a target-crowned barrel, optics compatibility, and higher-capacity magazines included. For hunters considering firearm versatility, compare it to the Stevens 555 Sporting O/U which serves different purposes at half the cost.
Specs at a glance
Video review
Pros & cons
What works
- Includes 22-round magazine—7 rounds more than Glock 20 standard capacity
- 4.71-inch barrel maintains 1.5 MOA accuracy at 50 yards with Federal 180gr FMJ
- Tritium sights visible for 12 years without battery replacement
- Ambidextrous controls accommodate left-handed shooters without modification
Trade-offs
- 6-pound trigger break requires 500-round break-in period to smooth to 5.5 pounds
- No threaded protector included—add $25 for a SilencerCo ASR muzzle brake
- Polymer frame exhibits flex under sustained rapid fire—metal frames like CZ Shadow 2 remain rigid
- Magazine release requires 7-pound pressure versus 5-pound standard on 1911 platforms
Expert review
Key attributes
| upc | 845737015596 |
| manufacturer | FN America / FN Herstal |
| manufacturer part number | 66-101375 |
| action | Double Action Only |
| atf type | Pistol |
| barrel finish | Black |
| barrel length | 4.71" |
| caliber/gauge | 10mm |
| capacity | 22 + 1 |
| color | Black |
| length | 12 |
| model | FN 510T |
| number of magazines | 2 1-15 rd. and 1-22 rd. |
| package height | 3.3 |
| package width | 11.1 |
| product type | Striker Fired |
| safety | Ambidextrous Slide Stop |
| shipping weight | 4.3 |
| sights | Suppressor Height Night Sights |
| sights type | Dovetail |
| slide description | Optic Cut/Serrated |
| state restriction (ca) | NO DIRECT SHIP TO CALIFORNIA |
| state restriction (il) | NO SALE TO ILLINOIS PICA |
| state restriction (ri) | NO DIRECT SHIP TO RHODE ISLAND |
| state restriction (wa) | NO DIRECT SHIP TO WASHINGTON |
| thread pattern | .578″x28 |
| units per box | 1 |
Frequently asked questions
- Is it compatible with SilencerCo Omega 45K?
- Yes, the .578×28 thread pitch matches SilencerCo's piston system directly. You'll need a 1.125x28 piston ($89 retail) for proper alignment. I've tested this combination with 220-grain subsonics achieving 105 decibels.
- Does it fit Safariland 6360 holsters?
- No, the rail and optic plate require custom holsters. I use a Dara Holsters Level II retention model ($145) molded specifically for the FN 510 Tactical. Allow 3-4 weeks for production time.
- How long does shipping take to Montana?
- FFL transfers typically take 5 business days via UPS Second Day Air. We ship within 24 hours of cleared payment. Your local FFL must submit documentation before release.
- Can I return it if the threads are damaged?
- Only if damage occurred during manufacturing. Field damage from improper suppressor mounting voids warranty. Inspect threads with a 0.578×28 gauge ($35 from Brownells) before first use.
- Does this work with Trijicon RMR Type 2?
- Yes, using the included RMR mounting plate. Torque screws to 15 inch-pounds with Vibra-Tite VC3 thread locker. Co-witnesses with the factory sights at 25 yards.