# Diamondback DB15 AR-15: Versatile 5.56 NATO Semi-Auto Rifle

**Brand:** Diamondback Firearms
**Category:** AR Style Rifles
**Caliber:** 5.56 NATO

## Specifications

- **Caliber:** 5.56 NATO
- **Barrel Length:** 16"
- **Capacity:** 30 rounds
- **Finish:** Black Nitride
- **Weight:** 108.8 oz
- **Overall Length:** 36"
- **UPC:** 810035754096
- **SKU:** UCEGBnTM0

## Description

The Diamondback DB15 is a semi-automatic AR-15 chambered in 5.56x45mm NATO, built on a 7075-T6 aluminum receiver. The 16-inch barrel has a 1:8" twist rate, which stabilizes a wide range of bullet weights reliably. It ships with a Magpul CTR stock, adjustable for length of pull, and a flash hider. No iron sights are included, but the flat top is optic-ready.

### Key Specifications
- **Caliber:** 5.56x45mm NATO
- **Action:** Semi-Automatic
- **Capacity:** 30 rounds (30+1)
- **Barrel Length:** 16 inches
- **Weight:** 6.8 lbs
- **Finish:** Black

### Features
- 7075-T6 aluminum upper and lower
- 16" barrel, 1:8" twist
- Magpul CTR adjustable stock
- Flash hider
- Optic-ready flat top (no iron sights)

At 6.8 lbs. it handles well, and the 1:8" twist makes it flexible with heavier 62- to 77-grain loads if you go that route.

## Frequently Asked Questions

**Q: What caliber is the Diamondback DB15?**

A: The DB15 is chambered in 5.56x45mm NATO.

**Q: What is the barrel length of the Diamondback DB15?**

A: The barrel is 16 inches long with a 1:8" twist rate.

**Q: How many rounds does the Diamondback DB15 hold?**

A: It has a 30+1 capacity.

**Q: Who makes the DB15?**

A: The DB15 is made by Diamondback Firearms.

**Q: What type of firearm is the Diamondback DB15?**

A: It is a semi-automatic AR-style rifle built on a 7075-T6 aluminum receiver.

**Q: Is the Diamondback DB15 optic-ready?**

A: Yes. The flat top upper is optic-ready, though no iron sights are included.

**Q: Does the Diamondback DB15 come with an adjustable stock?**

A: Yes. It ships with a Magpul CTR stock that is adjustable for length of pull.

**Q: Where can I buy the Diamondback DB15?**

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.*

> Now we don't recommend running this through your gun too much you know steel case we'll beat on your gun a good bit unless it's an old military surplus.
>
> — [CGA Defense](https://www.youtube.com/watch?v=lIlB3eq-MG4&t=155s)

> It's ran perfect we haven't had a single issue and the only time we've had an issue is due to ammo not to the gun itself.
>
> — [CGA Defense](https://www.youtube.com/watch?v=lIlB3eq-MG4&t=263s)

> It looks sexy and again for the price Diamondback Firearms or any of their AR platforms is probably one of the best you can get on the market.
>
> — [CGA Defense](https://www.youtube.com/watch?v=lIlB3eq-MG4&t=311s)

## What Customers Say

*AI-generated insights from customer reviews*

Owners of the DB15 generally land in the satisfied-but-realistic camp. Most cite the value-to-performance ratio as the main reason to buy. It delivers reliable 5.56 NATO function at a lower price than many competitors, and shooters across experience levels find it easy to run.

The Magpul CTR stock and optic-ready upper are well-liked. The platform's AR-15 compatibility means aftermarket parts are easy to find, which matters to the users who want to customize.

Criticism tends to cluster around the trigger and gas system. Some owners report the trigger feels rough or inconsistent after extended use, and a handful have hit gas-system issues under hard use. Accuracy at distance gets mixed marks, adequate for general use, but not what you'd expect from a precision-focused build.

Customer support experiences are inconsistent; some users got fast resolution, others ran into delays. Overall it reads as a solid entry-level AR-15 worth considering if the price point fits, but buyers expecting higher-end performance should factor in the possibility of part upgrades.

## Pricing

**13 offers available**

| Vendor | Price |
|--------|-------|
| Shootingsurplus Com | $782.73 |
| Grabagun Com | $789.99 |
| Gritrsports Com | $789.99 |
| Kygunco Com | $793.26 |
| Centerfiresystems Com | $793.99 |
| Impactguns Com | $798.79 |
| Globalordnance Com | $807.30 |
| Buds Gun Shop | $813.49 |
| Selwayarmory Com | $828.49 |
| Deguns | $828.99 |

*...and 3 more offers*

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- [Diamondback DB15 AR-15 Carbon 5.56 NATO 16" Semi-Auto Rifle](https://gunsnation.com/p/diamondback-db15-ar-15-carbon-5-56-nato-16-semi-auto-rifle/UCEGBnTSe)
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*Data from [GunsNation](https://gunsnation.com)*