The DIAMONDBACK DB15 delivers a compact, purpose-built semi-auto platform optimized for 300 Blackout performance in short-barrel applications. Designed for shooters who need controllable suppressed fire and reliable function from a lightweight package, this build balances hard-use components with a focused parts selection.

DIAMONDBACK DB15

Design and construction

The DIAMONDBACK DB15 uses forged 7075 T-6 aluminum for both upper and lower receivers, providing a solid foundation for accuracy and durability. The Diamondback Carbon lower keeps weight down while the A3 flattop upper accepts optics and accessories without the need for extra adapters. At just 5.1 lbs and 23″ overall length, this rifle is easy to maneuver in close quarters while retaining balance for follow-up shots.

Barrel, twist rate, and caliber advantages

At the heart of this build is a Diamondback Barrels 300 blk, 10″ heavy profile barrel made from 4150 CrMoV with a black nitride finish and a 1:8″ twist rate. That 1:8″ twist is a versatile choice for 300 Blackout — it stabilizes both subsonic bullets in the 200–220 grain range and supersonic loads without sacrificing consistency. The pistol-length gas system is tuned for short barrels and suppressed operation, reducing bolt carrier velocity and felt recoil during rapid strings of fire.

Key features and components

Critical internal parts include a shot-peened, magnetic particle inspected mil-spec 8620 carrier BCG for longevity under heavy use. The 9″ M-LOK handguard offers modular mounting options for lights and grips while keeping the profile slim. Ergonomics come from a Moe grip and a buffer tube with foam pad stock. The package ships without sights, giving you freedom to top it with your preferred optic; muzzle threading is 5/8 x 24 to accept common suppressors or the included A2 flash hider.

Magazine and controls

The DIAMONDBACK DB15 includes a 28-round CPD magazine and a standard trigger for consistent pull weight out of the box. At a retail price of $654.99, it represents a cost-conscious entry into dedicated 300 Blackout platforms with quality components.

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Who should consider the DB15

Tactical teams, hunters using suppressed subsonic loads, and enthusiasts seeking a short, powerful semi-auto will appreciate the 10″ 300 Blackout barrel and pistol-length gas system. The combination of a 1:8″ twist, hardened BCG, and modular handguard makes this rifle adaptable for suppressed and unsuppressed roles alike. Check current availability and order through the shop page to lock in pricing and shipping.

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People Also Ask

What makes this product stand out from competitors?

This product offers superior quality and innovative features that set it apart in the market. Its design focuses on both performance and reliability, making it a top choice for professionals and enthusiasts alike.

Is this product suitable for beginners?

Yes, this product is designed with user-friendly features that make it accessible to beginners while still offering advanced capabilities for experienced users.

What warranty or support is available?

The product comes with comprehensive warranty coverage and excellent customer support to ensure your satisfaction and peace of mind.

How does this compare to similar products in its price range?

This product offers exceptional value for its price point, providing features and quality that typically cost significantly more in comparable alternatives.

What maintenance is required?

Minimal maintenance is required thanks to the product’s durable construction and quality materials. Regular cleaning and occasional inspections will keep it performing optimally.