The Diamondback DB15 is a semi-automatic AR-style rifle chambered in .300 AAC Blackout. It is built on forged 7075-T6 aluminum receivers and features a 16-inch 4150 CrMoV heavy barrel with a black nitride finish. The rifle comes equipped with a 15-inch M-LOK handguard, Magpul CTR stock, MOE K2 grip, and a Gen 3 30-round .300 BO PMAG. A pistol-length gas system and a shot-peened Mil-Spec 8620 bolt carrier group complete the core operating components.
Key Specifications
- Chambered in .300 AAC Blackout.
- The barrel is a 16-inch 4150 CrMoV heavy barrel with a black nitride finish.
- Rate of twist is 1:8 RH.
- Uses a pistol-length gas system.
- Equipped with a shot-peened Mil-Spec 8620 bolt carrier group.
- Includes a 15-inch M-LOK handguard with anti-slip texture pads.
- Features a Magpul CTR adjustable stock and Magpul MOE K2 grip.
- Ships with a 30+1 capacity and one Gen 3 30-round .300 BO PMAG.
- Fitted with a Diamondback DBSB-IV flash hider, 5/8×24 thread pattern.
- Forged 7075-T6 aluminum receivers and a listed weight of 6.8 lbs.
This DB15 configuration delivers a practical balance of durability, ergonomics, and modularity for range work, precision shooting, and field use. Its heavy nitride-treated barrel, reliable operating components, and Magpul furniture provide a stable platform for users who value straightforward, high-quality performance.
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