# FN 509: 9mm Striker Pistol, Matte Black, 17-Round Capacity

**Brand:** FN Herstal
**Category:** Full Size Handguns
**Caliber:** 9mm

## Specifications

- **Caliber:** 9mm
- **Barrel Length:** 4"
- **Capacity:** 17 rounds
- **Finish:** Matte Black
- **Weight:** 27.2 oz
- **Overall Length:** 7.4"
- **UPC:** 845737008079
- **SKU:** UCEt9uIP9

## Description

The FN 509 is a 9mm striker-fired pistol with a 4-inch cold hammer-forged barrel, 17-round capacity, matte black finish, and a lightweight polymer frame. It weighs 1.7 lbs.

### Key Specifications
- **Caliber**: 9MM Luger (9x19 Para)
- **Action**: Striker Fire
- **Capacity**: 17 Rounds
- **Barrel Length**: 4 inches
- **Weight**: 1.7 lbs
- **Sights**: 3-Dot Fixed
- **Finish**: Matte Black

### Detailed Features

FN's cold hammer-forging process produces a barrel with tighter tolerances and longer service life than button-rifled alternatives. The polymer frame keeps weight at 1.7 lbs. Interchangeable backstraps accommodate different hand sizes. The textured grip surface holds securely under recoil.

Three-dot fixed sights provide a straightforward aiming reference. The 17-round capacity matches most full-size 9mm service pistols.

### Usage Scenarios

The FN 509 suits personal defense, duty carry, and range training. The full-size frame and 17-round capacity make it less suited for concealed carry compared to compact variants, but it handles well for holster carry and range work.

## Frequently Asked Questions

**Q: What caliber is the FN 509?**

A: The FN 509 is chambered in 9mm Luger (9x19 Para).

**Q: Who makes the FN 509?**

A: The FN 509 is made by FN Herstal.

**Q: What type of firearm is the FN 509?**

A: It is a full-size striker-fired semi-automatic pistol with a polymer frame.

**Q: What is the barrel length of the FN 509?**

A: The FN 509 has a 4-inch cold hammer-forged barrel.

**Q: How many rounds does the FN 509 hold?**

A: It has a 17-round capacity.

**Q: What sights does the FN 509 have?**

A: The FN 509 comes with 3-dot fixed sights.

**Q: Where can I buy the FN 509?**

A: Compare current vendor offers on this page.

## What Reviewers Say

*Quoted verbatim from YouTube reviews. Each link opens the video at the moment quoted.*

> It takes a lot to impress me away from a Glock. Not necessarily away from it but to impress me in a firearm.
>
> — [hickok45](https://www.youtube.com/watch?v=fv-Hw6VUPcE&t=76s)

> It's hard to find people that badmouth these things.
>
> — [hickok45](https://www.youtube.com/watch?v=fv-Hw6VUPcE&t=811s)

> Probably would be the number one choice of these three as a carry gun.
>
> — [hickok45](https://www.youtube.com/watch?v=fv-Hw6VUPcE&t=661s)

> I can't imagine really wanting or needing one bigger than that for just civilian carry or whatever.
>
> — [hickok45](https://www.youtube.com/watch?v=fv-Hw6VUPcE&t=672s)

## What Customers Say

*AI-generated insights from customer reviews*

Reliability is the FN 509's consistent strong point. Owners report smooth function across various 9mm ammunition types, and the cold hammer-forged barrel's durability over high round counts is frequently cited. The ergonomics are well-received. The grip texture provides confidence during shooting and the 17-round capacity gives good magazine endurance.

The 3-dot sights work fine for most users, though shooters accustomed to suppressor-height or competition sights sometimes upgrade them. Trigger feedback is the most common critique: factory pull weight is adequate but some owners describe it as heavier or less refined than aftermarket alternatives, which leads to trigger upgrades.

Size is a consideration. At full-size dimensions the 509 isn't optimized for concealed carry, and some users note this when comparing it to the 509 Compact or other mid-size options. Overall, owners characterize it as a dependable and capable service pistol that performs consistently without demanding much maintenance attention.

## Pricing

**1 offers available**

| Vendor | Price |
|--------|-------|
| Guns Com | $607.99 |

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*Data from [GunsNation](https://gunsnation.com)*