# FN 509MT FDE 9MM Striker Pistol, 15+1 RD, Night Sights

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

## Specifications

- **Caliber:** 9mm
- **Barrel Length:** 4.5"
- **Capacity:** 15 rounds
- **Finish:** Flat Dark Earth
- **Overall Length:** 12"
- **UPC:** 845737018429
- **SKU:** UCEt9uL65

## Description

The FN 509MT is a striker-fired 9mm pistol with a 4.5-inch barrel and 15+1 capacity. It ships in Flat Dark Earth with 3-dot suppressor-height night sights and an interchangeable FDE backstrap for grip sizing.

### Key Specifications
- **SKU:** 2024014372
- **UPC:** 845737018429
- **Brand:** FN
- **Model Name:** 509MT
- **MPN:** 66101938
- **Caliber:** 9MM LUGER
- **Action:** Striker Fire
- **Capacity:** 15+1 RD
- **Barrel Length:** 4.5"
- **Overall Length:** 12"
- **Sights:** 3-Dot Night/Suppressor Height
- **Grip:** FDE Interchangeable Backstrap
- **Trigger Type:** Standard
- **Safety Features:** None
- **Finish Color:** Flat Dark Earth
- **Condition:** New in Box

### Detailed Features

The striker-fired mechanism gives a consistent trigger pull without a manual safety. At 4.5 inches the barrel is on the longer side for a service pistol, which helps with velocity and sight radius. The suppressor-height sights clear most can sizes and remain usable with or without a suppressor attached. The FDE interchangeable backstrap lets you adjust the grip circumference to fit different hand sizes. Night sights are standard, useful for low-light defensive use without buying aftermarket sights.

### Target Audience

The 509MT suits shooters who want a full-featured service pistol with a suppressor-ready sight picture. The FDE finish and 15+1 capacity make it practical for duty, home defense, or range use.

### Usage Scenarios

- Home defense: 15+1 capacity and night sights are practical in low-light environments.
- Tactical or duty use: the 4.5-inch barrel and suppressor-compatible sights match that application well.
- Recreational shooting: reliable feeding across ammunition types and an adjustable grip suit extended range sessions.

## Frequently Asked Questions

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

A: It is chambered in 9mm Luger.

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

A: The barrel is 4.5 inches long.

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

A: It has a 15+1 capacity.

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

A: It is made by FN Herstal.

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

A: It is a full-size striker-fired pistol.

**Q: Does the FN 509MT have a threaded barrel?**

A: Yes, several titles list it with a threaded barrel.

**Q: What sights does the FN 509MT come with?**

A: It ships with 3-dot suppressor-height night sights.

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

A: Compare current vendor offers on this page.

## What Customers Say

*AI-generated insights from customer reviews*

The FN 509MT draws positive feedback for build quality and ergonomics. Owners describe the grip as comfortable and natural-feeling during longer sessions. Out-of-the-box accuracy is frequently noted. People report good results at defensive and medium ranges without needing to adjust sights. The 15+1 capacity is consistently cited as a plus for both carry and home use. Night sights are praised as a genuine advantage for self-defense setups.

The two main complaints are trigger feel and weight. Some owners find the trigger heavier and less refined than comparable pistols, and while the gun is well-built, the weight can make extended carry less comfortable. Holster availability is narrower than for Glock or S&W platforms, which comes up among people who want to carry regularly.

## Pricing

**1 offers available**

| Vendor | Price |
|--------|-------|
| Guns Com | $1119.99 |

## Similar Products

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