# Diamondback DB9: 9mm Semi-Auto Rifle, 16" Barrel, 32rd Mag

**Brand:** Diamondback Firearms
**Category:** Semi-Automatic Rifles
**Caliber:** 9mm

## Specifications

- **Caliber:** 9mm
- **Barrel Length:** 16"
- **Capacity:** 32 rounds
- **Finish:** Black Nitride
- **Weight:** 108.8 oz
- **Overall Length:** 36"
- **UPC:** 810035755734
- **SKU:** UCEGBnTmQ

## Description

The Diamondback DB9 is a 9mm Luger semi-automatic rifle with a 16-inch Chromoly steel barrel, 7075-T6 aluminum receiver, and an adjustable Magpul CTR stock. The 32+1 capacity and pistol-caliber format make it a practical choice for range use or home defense at typical indoor distances.

### Key Specifications
- **Action:** Semi-Auto
- **Caliber:** 9mm Luger
- **Barrel Length:** 16"
- **Capacity:** 32+1 rounds
- **Safety:** Manual Thumb Safety
- **Overall Length (OAL):** Adjustable from 32.75" to 36"
- **Weight:** 6.80 lbs
- **Stock Description:** Adjustable Magpul CTR Stock
- **Sights:** Optic Ready
- **Material - Receiver:** 7075-T6 Aluminum
- **Muzzle Device:** Flash Hider
- **Barrel Twist Rate:** 1:9.50"

### Detailed Features

The Chromoly barrel with a 1:9.50" twist handles standard 9mm loads well. The Magpul CTR stock adjusts across a 3.25-inch range for length of pull. Optic-ready flat top allows mounting any standard Picatinny optic. The flash hider reduces visible signature in low-light. Manual thumb safety is on the left side, standard AR placement.

## Frequently Asked Questions

**Q: What caliber is the Diamondback DB9?**

A: The DB9 is chambered in 9mm Luger.

**Q: What is the barrel length of the Diamondback DB9?**

A: It has a 16-inch Chromoly steel barrel.

**Q: How many rounds does the Diamondback DB9 hold?**

A: It has a 32+1 capacity.

**Q: What type of firearm is the Diamondback DB9?**

A: It is a semi-automatic rifle in a pistol-caliber format.

**Q: Is the Diamondback DB9 optic-ready?**

A: Yes, the flat-top upper is optic-ready and accepts any standard Picatinny mount.

**Q: What stock does the Diamondback DB9 come with?**

A: It comes with an adjustable Magpul CTR stock that adjusts over a 3.25-inch range for length of pull.

**Q: Where can I buy the Diamondback DB9?**

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.*

> Hey I I have to say it shoots pretty well for a skinny little gun if you can control the trigger uh it's not too bad.
>
> — [hickok45](https://www.youtube.com/watch?v=VHC9zUVRc18&t=258s)

> It uh it does does jump in your hand if you're recoil sensitive and you think a you know Glock 26 or a PM9 kicks hard uh bothers you then you won't like this gun you really won't.
>
> — [hickok45](https://www.youtube.com/watch?v=VHC9zUVRc18&t=465s)

> Again it it's not fun to shoot I wouldn't want to shoot at two 300 rounds every day but uh it's not supposed to be fun it's as small as you can get.
>
> — [hickok45](https://www.youtube.com/watch?v=VHC9zUVRc18&t=1526s)

## What Customers Say

*AI-generated insights from customer reviews*

The DB9 gets attention primarily as an affordable entry into pistol-caliber carbines with a 32-round magazine. Both of those features come up consistently in positive feedback. The compact size and manageable 9mm recoil make it accessible to newer shooters, and the Magpul stock adds some legitimacy to the overall package.

The more critical feedback covers reliability: some owners report feed and eject failures, particularly with certain ammo types. Build quality gets mixed marks, adequate for the price point, but owners who have handled higher-end PCCs notice the difference. The lightweight design amplifies felt recoil compared to heavier 9mm rifles. Aftermarket accessories are more limited than for established brands, which matters to shooters who want to customize.

## Pricing

**1 offers available**

| Vendor | Price |
|--------|-------|
| Primaryarms Com | $840.00 |

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