Diamondback DB15 Combo Features
Built around a lightweight yet durable Diamondback carbon lower and a 7075-T6 aluminum upper, the DB15 Combo is finished in a striking Flat Dark Earth (FDE) Cerakote, providing both rugged protection and visual appeal. The 16-inch chromoly steel barrel is treated with a black nitride finish for enhanced longevity and resistance to wear, while the 1:8 twist rate allows for consistent performance across a range of bullet weights in both calibers.
Outfitted with a 12-inch M-LOK handguard, this rifle is ready for mounting a wide range of AR-15 accessories such as lights, lasers, and foregrips. The optics-ready upper with a Picatinny rail ensures flexibility for sighting options. Handling is enhanced with a Magpul MOE adjustable carbine stock and Magpul grip, offering a customizable fit and ergonomic control. The A2 flash hider and manual thumb safety round out a feature-rich platform designed for performance and safety. With its direct impingement system, the DB15 Combo ensures smooth and reliable cycling for every round.
Diamondback DB15 Combo Specifications
- Manufacturer: Diamondback
- Model: DB15 Combo
- Series: Combo
- Caliber: 5.56x45mm NATO / .300 AAC Blackout
- Type: Semi-Auto Rifle
- Action: Direct Impingement
- Capacity: 30 + 1
- Barrel Length: 16″
- Barrel Material: Chromoly Steel
- Barrel Finish: Black Nitride
- Twist Rate: 1:8″
- Thread Pattern: 1/2″-28 TPI
- Muzzle Device: A2 Flash Hider
- Receiver Material: 7075-T6 Aluminum Upper / Diamondback Carbon Lower
- Receiver Finish: Flat Dark Earth Cerakote
- Handguard: 12″ Free-Float M-LOK
- Grip: Black Magpul
- Stock: Adjustable Magpul Carbine
- Stock Material: Synthetic
- Stock Finish: Black
- Sights: Optic Ready
- Safety: Manual Thumb
- Magazine Type: AR-15 Standard
- Magazine Included: 1 (30-Round)
- Overall Length: 32.50″ – 35.75″
- Weight: 6.65 lbs
- Gun Platform: AR-Style
- Hand: Right
Frequently Asked Questions About This Product
Why buy Diamondback DB15 Combo FDE 5.56 / .300 AAC Blackout 16" Barrel 30-Rounds from Miami Shooters Supply?
We’re a trusted firearms dealer offering fast shipping, competitive pricing, and 100% compliance with U.S. federal firearm laws. All orders ship from our licensed facility with full tracking and expert customer service.
Where can I buy Diamondback DB15 Combo FDE 5.56 / .300 AAC Blackout 16" Barrel 30-Rounds?
You can purchase this item directly on our website and have it shipped to your local FFL dealer. You can also visit us in-store in Miami, Florida.
Is Diamondback DB15 Combo FDE 5.56 / .300 AAC Blackout 16" Barrel 30-Rounds available now?
Availability is shown live on this page. If the “Add to Cart” button is visible, this item is currently in stock and ready to ship.
What category does this product belong to?
This product is listed under: Modern Sporting Rifles.
What tags or features does this product have?
Key features and tags for this product include: Modern Sporting Rifles.
Is this product legal in my state?
It is your responsibility to ensure this item is legal in your state or locality. We ship only to valid FFL dealers in compliance with U.S. laws. Always check your local regulations.
FFL Transfer & Firearms Laws for Diamondback DB15 Combo FDE 5.56 / .300 AAC Blackout 16" Barrel 30-Rounds
All firearms, including the Diamondback DB15 Combo FDE 5.56 / .300 AAC Blackout 16" Barrel 30-Rounds, must be shipped to a licensed Federal Firearms License (FFL) dealer. You will be required to complete a background check and any necessary paperwork before taking possession.
How It Works
- Place your order online.
- Provide your preferred FFL dealer information.
- We ship the firearm directly to your FFL.
- You complete the background check and pickup at the FFL.
Legal Compliance
We comply with all federal and state firearm laws. It is your responsibility to ensure the Diamondback DB15 Combo FDE 5.56 / .300 AAC Blackout 16" Barrel 30-Rounds is legal in your state. Some states may have restrictions on certain firearm models or features.
Helpful Resources
Need assistance? Contact our Miami store for help with FFL transfers and firearm compliance.
