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Diamondback DB15 5.56 / .223 Rem 16″ Barrel 30-Rounds M-LOK Rail



Diamondback AR15 rifles for sale online or in-store at Sportsman’s Warehouse. Shop a full selection of AR15 Rifles manufactured by Diamondback.


Diamondback AR15: A Complete Buyer’s Guide and In-Depth Review


The Diamondback AR15 rifle is an iconic piece of American firearms engineering. Known for its reliability and versatility, this rifle has earned its place in the hearts of shooting enthusiasts and marksman communities alike. This article aims to plunge into the depths of the Diamondback AR15, offering a meticulous review and comprehensive buyer’s guidance to enhance your understanding of this remarkable rifle.

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As we explore, we’ll consider various aspects such as performance, quality, and customization of the Diamondback AR15, addressing common questions like “are Diamondback AR15s good?” and the best “Diamondback AR15 accessories” to enhance your shooting experience. Whether you’re considering the purchase of a Diamondback AR15 556, a 300 blackout Diamondback AR15, or contemplating the value of a Diamondback AR15 pistol, this guide will prepare you to make an informed decision.

Understanding the Diamondback AR15

The Basics of Diamondback AR15

Diamondback Firearms ventured into the firearms market with the promise of providing high-quality rifles and pistols, and their AR15 has not disappointed. Eye-catching in its design and sturdy in its build, the Diamondback AR15 speaks of the American commitment to craft rifles that last. Its foundation is a testament to the AR-15 platform’s military heritage, re-engineered for civilian use.

The Diamondback AR15 range is formidable, each rifle featuring a chrome-moly barrel and a forged 7075-T6 aluminum receiver. This unique combination of materials ensures the rifle is both lightweight and enduring, suitable for a variety of shooting activities, from tactical applications to recreational target practice.

Key Features of Diamondback AR15

When it comes to features, the Diamondback AR15 series shines. Here’s what you can expect with this rifle:

  • Barrel: Expect precision with a durable 4140 Chrome-Moly steel barrel, confidently hitting targets at range.
  • Receiver: The 7075-T6 aluminum upper and lower receiver add to the rifle’s lightweight profile while ensuring durability.
  • Caliber Variations: Choose between the classic 5.56 NATO, versatile .223 Remington, or the powerful 300 Blackout round for greater stopping power.

Each of these elements plays a crucial role in making the Diamondback AR15 a superb firearm that meets various shooting needs. Whether you’re at the range or in the field, the rifle’s mechanics and ergonomics stand out, providing you with an unmatched shooting experience.

Click here to learn more about the specifications and build quality of Diamondback AR15 rifles directly from the source.

Next, we will delve into the models and accessories that enhance the firepower of the Diamondback AR15. Stay tuned as we break down the variants, weigh customization options, and feature some of the best enhancements to make the Diamondback AR15 uniquely yours.

Diamondback AR15 Variants and Accessories

Exploring the Diamondback AR15 Variants

Diamondback AR15 556 vs. 300 Blackout: Pros and Cons

The Diamondback AR15 556 is a versatile weapon that excels in a variety of operational conditions. Its 5.56 NATO caliber is well-respected for its balance of stopping power and manageable recoil. This makes it a top choice for enthusiasts seeking a rifle for sport shooting, home defense, or small-game hunting.

On the other hand, the 300 Blackout Diamondback AR15 variant is a beast in a category of its own. Designed for higher impact and better performance with a suppressor, the 300 Blackout caliber caters to a specific audience, looking for a potent AR15 experience.

Feature Diamondback AR15 556 300 Blackout Diamondback AR15
Caliber 5.56 NATO .300 AAC Blackout
Barrel Length Typically 16 inches Various options available
Purpose Versatility for multiple uses Close-quarters and suppressed fire

The Pistol Variant: Features of the Diamondback AR15 Pistol

The Diamondback AR15 pistol offers compact firepower with superb maneuverability, making it suitable for home defense and tactical operations. With the same build quality as its rifle counterpart, the pistol variant is a testament to Diamondback’s commitment to versatile firearms manufacturing.

Spotlight on the Diamondback AR15 DB15 Model

The DB15 is a standout model in the Diamondback AR15 family, representing the epitome of innovation and craftsmanship. With its multiple handguard options, rifle and pistol configurations, and the availability of calibers, it is not only a firearm but a statement piece that says you demand the best in design and function.

Customizing the Diamondback AR15

Personalization is key when owning a firearm. Here, we’ll touch upon the most sought-after Diamondback AR15 accessories that elevate your rifle’s potential:

  • High-quality scopes to ensure precision and accuracy at various ranges
  • Adjustable stocks for shooters of different statures and shooting styles
  • AR-specific tools to maintain and adjust your rifle with ease

Best Scopes for Diamondback AR15

Selecting a scope for your Diamondback AR15 can be a game-changer in your shooting experience. A balance of clarity, durability, and functionality is key. For example, the Vortex Optics Strike Eagle series provides a versatile option for both close-quarter and long-range shooting.

Options for Slings, Sights, and Tactical Add-Ons

A reliable sling not only assists in carrying the firearm but also stabilizes it during shooting. The Magpul MS3 Multimission Sling is a favored choice for its adaptability and comfort.

When it comes to sights, whether you prefer iron sights for traditional accuracy or red-dot sights for rapid target acquisition, there is an array of choices that enhance the rifle’s functionality. Moreover, tactical lights, grips, and forends can customize your AR15 to your exact tactical or recreational needs.

For an exhaustive list of accessories and to customize your Diamondback AR15, consider checking out reputable firearms accessories retailers.


Performance and Quality

Shooting Performance

The Diamondback AR15 series is well-regarded for its performance under different conditions, from range days to tactical scenarios. Here’s a granular look at what you can expect when you take a Diamondback AR15 out for a spin:

Accuracy: A riflescope can add pinpoint precision to this already accurate rifle. The solid construction and manufacturing tolerances allow for consistent shot grouping and reliable performance.

Reliability: AR15s are known for their dependability, and the Diamondback variants uphold this tradition. Whether you’re using 5.56 NATO, .223 Remington, or 300 Blackout rounds, the AR15’s gas-operated system and quality components ensure smooth cycling and function, even under adverse conditions.

Handling: The ergonomic design and modularity of the Diamondback AR15 make it a comfortable firearm for shooters of all skill levels. With a well-balanced weight distribution and the ability to custom-tailor the rifle with accessories, handling is intuitive and user-friendly.

Durability and Maintenance

Durability is a cornerstone of the Diamondback AR15 rifles. The use of high-grade materials and a hard-coat anodized finish promise a long life with proper care. Regular cleaning and maintenance will keep your AR15 in excellent condition for years, an investment that pays off in certainty and safety.

Here are some maintenance tips:

  • Regularly clean the barrel and action to ensure optimal performance and prevent corrosion.
  • Lubricate the moving parts according to the manufacturer’s specifications to promote smooth operation.
  • Inspect your rifle for wear and tear, especially after extensive use, and replace any worn parts as needed.


Pricing and Availability

Diamondback AR15 Price Point

When it comes to purchasing an AR15, the Diamondback series offers a range of prices suitable for both novice shooters and seasoned enthusiasts. You can expect the following:

  • Entry-level models that are budget-friendly, providing an excellent starting point for first-time buyers.
  • Mid-range rifles with enhanced features for those looking to step up their shooting game.
  • Premium variants for serious marksmen who demand top-tier performance.

Each price tier reflects the rifle’s build complexity, material quality, and the inclusion of advanced features. It’s important to balance cost with your specific needs to find the model that provides the most value for your investment.

Where to Buy Diamondback AR15

The Diamondback AR15 can be purchased from various outlets, including:

  • Local gun shops, where you may have the advantage of handling the rifle before purchasing.
  • Online firearms retailers, offering competitive pricing and a wide selection of models.
  • Gun shows, where you might find deals on new and used rifles—just be sure to follow all legal requirements for your area.

If you’re interested in purchasing a Diamondback AR15, you can find dealers and current stock here.

Diamondback AR15: The Good and the Bad

Pros and Cons of Diamondback AR15

Every firearm has its strengths and weaknesses. Here’s a balanced view to help you decide:


  • Versatility: The Diamondback AR15’s modular nature allows it to adapt to various shooting disciplines and user preferences.
  • Customization: A wide array of accessories and parts are available to personalize your firearm.
  • Performance: Solid construction, good accuracy, and reliability make the AR15 a top contender in its class.


  • Cost: Upfront and customization costs can add up, making it an investment.
  • Learning Curve: For new shooters, the abundance of options and the maintenance demands might be overwhelming at first.

Diamondback AR15 300 Blackout Review

The 300 Blackout variant of the Diamondback AR15 deserves a particular mention for its burgeoning popularity in the shooting community. Offering increased stopping power and the potential to shoot subsonically with a suppressor, it presents an appealing option for hunters and tactical shooters.

Users often note the 300 Blackout’s capacity to deliver higher energy on target at closer ranges when compared to the 5.56, making it ideal for medium-game hunting or home defense scenarios. However, consider the increased ammunition cost and recoil when choosing this caliber.

For extensive reviews on the 300 Blackout Diamondback AR15, see what users are saying.


The Diamondback AR15 is a versatile, high-performance rifle that appeals to a broad spectrum of shooting enthusiasts. From its wide model range to caliber options, it offers something for every marksmen’s needs. While considering the pros and cons, and accommodating your personal preferences for customization, the Diamondback AR15 stands as a worthy addition to any firearm collection.

Whether you’re a first-time buyer or a seasoned shooter looking to add another rifle to your armory, the Diamondback AR15 delivers value, versatility, and reliability. Before you make your decision, weigh the options, consider the potential variants, and remember: No matter your choice, maintenance and practice are paramount to getting the most out of your firearm.


DB15 Features

This DB15 rifle features a carbine-length, medium 4150 ChromeMoly barrel, mid-length gas system with pinned gas block, and a shot-peened Mil-Spec 8620 bolt carrier. It utilizes 7075-T6 aluminum receivers, 15″ M-Lok anti-rotation handguard, Magpul MOE-K2+ grip, and a Magpul ACS-L stock.

DB15 Specifications

  • Caliber: 223 Rem,5.56 NATO
  • Model: DB15
  • Stock Finish: Black
  • Action: Semi-Auto
  • Barrel Length Range: 16″ to 16.99″
  • Sights: None, Optic Ready
  • Capacity: 30+1
  • Muzzle: Muzzle Brake
  • Grips: Black Magpul MOE-K2+
  • Hand: Right
  • Handguards: 15″ M-LOK
  • Overall Length: 34″-37.25″
  • Receiver Finish: Black
  • Receiver Material: 7075 T6 Aluminum
  • Stock Description: Adjustable Magpul ACS-L
  • Stock Finish Group: Black
  • Stock Material: Synthetic
  • Thread Pattern: 1 / 2″-28 tpi
  • Trigger: Single-Stage
  • Twist: 1:8″
  • Weight: 6.95 lbs
  • Barrel Description: 4150 Chrome Moly
  • Barrel Finish: Black Nitride
  • Barrel Length: 16″

Additional Information


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