# Diamondback DB15 Obsidian 5.56 NATO 11.5in FDE

**Brand:** Diamondback Firearms
**Category:** Handguns
**Caliber:** 5.56 NATO

## Specifications

- **Caliber:** 5.56 NATO
- **Barrel Length:** 11.5"
- **Finish:** FDE Cerakote
- **UPC:** 810035756243
- **SKU:** UCEGBnTud

## Description

The Diamondback DB15 Obsidian is a 5.56 NATO AR-pattern pistol built on a forged 7075-T6 lower and an A3 flattop forged upper, finished in FDE Cerakote with matching FDE Magpul components. It runs an 11.5-inch chrome moly vanadium barrel with a black nitride finish, a 1:8 right-hand twist, and a 1/2x28 threaded muzzle wearing the DB Obsidian brake. An SB Tactical SBA5 brace and an 11-inch M-LOK handguard round out the carbine-length, direct-impingement configuration.

### Key Specifications
- **Brand:** Diamondback
- **Model:** DB15 Obsidian
- **Caliber:** 5.56 NATO
- **Action:** Semi-Auto
- **Capacity:** 30+1
- **Barrel Length:** 11.5 in
- **Barrel Material:** Chrome Moly Vanadium
- **Twist:** 1:8 in RH
- **Receiver Material:** Aluminum
- **Finish:** FDE Cerakote

### Detailed Features
- 11.5-inch carbine-length, direct-impingement barrel with a 1/2x28 threaded muzzle and DB Obsidian brake
- 11-inch M-LOK handguard with QD sling mounts and a full-length Picatinny top rail
- A3 flattop upper for optics mounting, with no sights included from the factory
- SB Tactical SBA5 brace paired with a Magpul MOE K2 grip
- Ships with a Magpul Gen M3 PMAG 30-round magazine

## What Customers Say

*AI-generated insights from customer reviews*

Owners of the Diamondback DB15 generally see it as an accessible entry point into the AR-pattern pistol category, with the Obsidian's FDE Cerakote finish drawing regular compliments for looking uniform across the upper, lower, and furniture. Reliability opinions vary: many report the direct-impingement action running smoothly once broken in, while a smaller group mentions needing to clean and lubricate more frequently than they expected before it settled in.

Handling feedback centers on the SBA5 brace and the M-LOK handguard, both of which owners describe as comfortable for bracing against the forearm and for mounting lights or grips. The threaded muzzle and DB Obsidian brake are popular talking points, with shooters saying the brake noticeably tames muzzle flip on a short-barreled pistol.

On value, the DB15 is often compared favorably to pricier AR-pattern pistols given its Magpul furniture and standard mil-spec-compatible parts, which makes it easy to find aftermarket handguards, grips, and optics mounts. Some owners do note that the lack of factory sights means budgeting for an optic before the gun is ready to run.

## Pricing

**5 offers available**

| Vendor | Price |
|--------|-------|
| Buds Gun Shop | $990.49 |
| Kygunco Com | $993.27 |
| Classicfirearms Com | $1014.00 |
| Deguns | $1037.99 |
| Guns Com | $1075.99 |

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