# FN Five-seveN SAO 5.7x28mm Pistol, 10-Rd, Adjustable Sights

**Brand:** FN Herstal
**Category:** Full Size Handguns
**Caliber:** 5.7x28mm

## Specifications

- **Caliber:** 5.7x28mm
- **Barrel Length:** 4.8"
- **Capacity:** 10 rounds
- **Finish:** Matte Black
- **Weight:** 21 oz
- **Overall Length:** 8.2"
- **UPC:** 845737003326
- **SKU:** UCEt9uHAU

## Description

The FN Five-seveN is a single-action 5.7x28mm pistol with a 4.8-inch barrel and 10+1 capacity. At 21 oz (1.3 lbs), the polymer frame keeps the weight down despite the full-size grip. Adjustable 3-dot sights and ambidextrous safety are standard. The matte black finish is the only color option here.

### Key Specifications
- **Brand:** FN
- **Model Name:** Five-seveN
- **Caliber:** 5.7x28mm
- **Action Type:** Single Action Only (SAO)
- **Capacity:** 10+1 rounds
- **Barrel Length:** 4.8 inches
- **Weight:** 1.3 lbs (21 oz)
- **Sights:** Adjustable 3-Dot
- **Grip Material:** Black Textured Polymer
- **Safety Feature:** Ambidextrous

### Detailed Features

The 5.7x28mm cartridge is the reason most people choose this gun. It produces notably lower recoil than 9mm at similar velocities. The round is essentially bottlenecked rifle-caliber in a pistol package. That makes rapid follow-up shots easier to control. The high-velocity, flat-trajectory round also has a reputation for feeding cleanly.

The SAO trigger is light and consistent. The ambidextrous safety operates identically from either side. The adjustable rear sight allows basic windage tuning. The textured polymer grip is slim for a 10-round gun, which helps with concealment.

### Usage

- Home defense: the low recoil and 10+1 capacity work well; the high-velocity round's terminal performance at home defense distances is an ongoing discussion in gun circles.
- Sport shooting: the flat trajectory and low recoil make it competitive in events where rapid fire accuracy matters.
- Concealed carry: at 21 oz it's lighter than many full-size 9mm pistols.

## Frequently Asked Questions

**Q: What caliber is the FN Five-seveN?**

A: The Five-seveN is chambered in 5.7x28mm.

**Q: What is the barrel length of the FN Five-seveN?**

A: It has a 4.8-inch barrel.

**Q: How many rounds does the FN Five-seveN hold?**

A: It has a 10+1 capacity.

**Q: Who makes the Five-seveN?**

A: The Five-seveN is made by FN Herstal.

**Q: What type of firearm is the FN Five-seveN?**

A: It is a full-size single-action only (SAO) semi-automatic pistol with a polymer frame.

**Q: Does the FN Five-seveN have an ambidextrous safety?**

A: Yes. The safety is ambidextrous and operates identically from either side.

**Q: Where can I buy the FN Five-seveN?**

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.*

> I initially used to think it would be pretty intuitive after a period of time with your fingers.
>
> — [Colion Noir](https://www.youtube.com/watch?v=9CTRye_ZEK4&t=199s)

> It is if i had to pick and choose between this trigger and the old one i'm gonna be honest i'm probably gonna go with the old one.
>
> — [Colion Noir](https://www.youtube.com/watch?v=9CTRye_ZEK4&t=518s)

> Rounds in a handgun this thing comes out screaming screaming but then also has very light recoil and because of that it allows you to just run this damn thing like a freaking lunatic.
>
> — [Colion Noir](https://www.youtube.com/watch?v=9CTRye_ZEK4&t=605s)

## What Customers Say

*AI-generated insights from customer reviews*

The Five-seveN SAO generates consistent enthusiasm around the 5.7x28mm cartridge and some recurring frustration around the price and ammo costs.

**Positive feedback:**

- The 5.7x28mm cartridge's low recoil relative to velocity is the most cited positive. Users report noticeably easier target reacquisition compared to 9mm.
- Accuracy gets strong marks at typical pistol distances, with several users noting tight groups from the 4.8-inch barrel.
- The lightweight (21 oz) for a full-size gun is well received, especially for carry use.
- Adjustable sights are a practical inclusion at this price point.

**Common complaints:**

- Price: both the gun and the ammunition cost more than comparable 9mm options, which limits how often buyers shoot it.
- Ammo availability: 5.7x28mm is less stocked than major calibers and disappears quickly during shortage periods.
- Ergonomics: grip size and angle get mixed reviews. Some shooters find it awkward, particularly those with smaller hands.
- The military/law enforcement associations of the 5.7 round generate occasional controversy in discussions.

## Pricing

**2 offers available**

| Vendor | Price |
|--------|-------|
| Gunbuyer Com | $1249.00 |
| Primaryarms Com | $1249.00 |

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