# Diamondback DB15 5.56 NATO AR Rifle - Optic Ready, FDE/Black

**Brand:** Diamondback Firearms
**Category:** Semi-Automatic Rifles
**Caliber:** 5.56 NATO

## Specifications

- **Caliber:** 5.56 NATO
- **Barrel Length:** 16"
- **Capacity:** 30 rounds
- **Finish:** Black
- **Weight:** 111.2 oz
- **Overall Length:** 37.25"
- **UPC:** 810035753143
- **SKU:** UCEGBnT6d

## Description

The Diamondback DB15 is a semi-automatic AR rifle chambered in 5.56x45mm NATO with a 16-inch chrome moly barrel at 1:8" twist and 7075-T6 aluminum receivers. It weighs 6.95 lbs and adjusts from 34" to 37.25" overall length via the Magpul ACS-L stock. Capacity is 30+1. No iron sights are included. The upper is optic-ready.

### Key Specifications
- **Action:** Semi-Auto
- **Caliber:** 5.56x45mm NATO
- **Barrel Length:** 16 inches
- **Capacity:** 30+1 rounds
- **Trigger Type:** Single-Stage
- **Safety Mechanism:** Manual Thumb Safety
- **Overall Length:** Adjustable from 34" to 37.25"
- **Weight:** 6.95 lbs
- **Stock Description:** Adjustable Magpul ACS-L
- **Muzzle Type:** Muzzle Brake
- **Receiver Material:** 7075-T6 Aluminum
- **Sights:** Optic Ready (no iron sights included)
- **Barrel Twist Rate:** 1:8"

### Detailed Features

The 7075-T6 aluminum receivers are the same alloy spec used across quality AR platforms. The 1:8" twist rate on the 16-inch barrel handles the full range of common 5.56/.223 bullet weights, from lighter varmint loads to heavier 77-grain match bullets. The Magpul ACS-L stock adjusts length of pull across six positions. A muzzle brake comes standard.

No sights are included. You'll need to add your own optic or iron sights before the rifle is ready to use.

### Usage Scenarios

At 6.95 lbs with the Magpul stock and 30+1 capacity, the DB15 fits general-purpose AR use: range work, home defense, or competitive shooting. The optic-ready upper makes it easy to configure for whatever role you have in mind.

## Frequently Asked Questions

**Q: What caliber is the DB-15 Diamond?**

A: The DB-15 Diamond is chambered in 5.56x45mm NATO.

**Q: Who makes the DB-15 Diamond?**

A: It is made by Diamondback Firearms.

**Q: What type of firearm is the DB-15 Diamond?**

A: It is a semi-automatic AR rifle.

**Q: What is the barrel length of the DB-15 Diamond?**

A: The barrel is 16 inches long.

**Q: How many rounds does the DB-15 Diamond hold?**

A: It has a 30+1 capacity.

**Q: Is the DB-15 Diamond optic-ready?**

A: Yes, the upper is optic-ready. No iron sights are included, so you will need to add your own optic or sights.

**Q: Does the DB-15 Diamond have an adjustable stock?**

A: Yes, it comes with a Magpul ACS-L stock that adjusts overall length from 34 to 37.25 inches.

**Q: Where can I buy the DB-15 Diamond?**

A: Compare current vendor offers on this page.

## What Customers Say

*AI-generated insights from customer reviews*

The DB15 gets its most consistent praise for value. It's an accessible entry point into the AR market with 7075-T6 aluminum receivers and a Magpul stock at a budget-friendly price. The lightweight build and customization options come up regularly as positives.

Reliability is where opinions diverge. A portion of owners report feeding and cycling issues with specific ammunition, and some find performance degrades under heavy use. For recreational shooting and home defense at moderate round counts, most owners are satisfied. For high-volume or demanding use cases, some suggest stepping up to a higher-priced alternative.

The FDE/Black finish is a matter of taste. Some like it, others find it unremarkable. Aftermarket compatibility gets discussed frequently, with owners modifying triggers, handguards, and other components. The absence of included iron sights is a recurring note for buyers who need the rifle ready to shoot immediately.

## Pricing

**14 offers available**

| Vendor | Price |
|--------|-------|
| Impactguns Com | $1126.39 |
| Shootingsurplus Com | $1136.64 |
| Grabagun Com | $1139.99 |
| Gritrsports Com | $1140.99 |
| Kygunco Com | $1146.88 |
| Buds Gun Shop | $1148.99 |
| Centerfiresystems Com | $1157.99 |
| Globalordnance Com | $1177.60 |
| Guns Com | $1177.99 |
| Selwayarmory Com | $1208.49 |

*...and 4 more offers*

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- [Diamondback DB15 - 5.56 NATO, 16" Semi-Auto Rifle, Black Finish](https://gunsnation.com/p/diamondback-db15-5-56-nato-16-semi-auto-rifle-black-finish/UCEGBnSYb)
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*Data from [GunsNation](https://gunsnation.com)*