Diamondback DB15 300 AAC Blackout 10" 30+1 Semi-Auto AR Pistol - SBA3 Brace

The Diamondback DB15 is an AR-platform pistol chambered in 300 AAC Blackout, purpose-built for suppressed and short-barrel shooting. This configuration pairs a compact 10" heavy threaded barrel with a 9" M-LOK handguard, making it an ideal host for suppressors, red dots, weapon lights, and forward accessories while keeping overall length manageable.

At its core, the DB15 uses a 7075-T6 aluminum receiver finished in black hard coat anodized for a durable, low-glare surface. A pistol-length Direct Impingement gas system cycles the action behind a mil-spec trigger and a shot-peened bolt. The barrel is machined from chrome moly vanadium (CMV) steel with a 1:8" right-hand twist well suited for a wide range of supersonic and subsonic 300 BLK loads, and is crowned with a classic A2 flash hider.

Up front, the 9" M-LOK handguard provides a free-float platform with plenty of real estate for accessories. At the rear, the pistol is stabilized by an SB Tactical SBA3 adjustable pistol stabilizing brace, and a Magpul MOE grip delivers a comfortable, ergonomic hold. The pistol feeds from standard AR-pattern 30-round magazines for a 30+1 capacity. Optics are not included, allowing the end user to outfit the platform with their preferred red dot, prism, or magnifier. Overall length runs 26" to 28.50" depending on brace position, with a carry-friendly weight of 5.70 lbs.

Whether you are building a suppressor-ready 300 Blackout range pistol, a compact home-defense platform, or a lightweight truck gun, the DB15 offers excellent value on a proven AR architecture.

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