Diamondback Firearms DB15 .300 Blackout 10" 29-Round AR Pistol

The Diamondback Firearms DB15 .300 Blackout 10" 29-Round AR Pistol delivers compact firepower in a platform built for close-quarters operations and specialized tactical applications. Chambered in .300 Blackout—a cartridge engineered for subsonic performance and suppressor compatibility—this AR pistol bridges the gap between rifle capability and pistol maneuverability. Purpose-built for operators who demand a short-barreled platform without sacrificing magazine capacity or ergonomic controls, the DB15 serves law enforcement tactical teams, defensive shooters, and precision riflemen operating in confined spaces.

At 6.8 lbs, the DB15 maintains a manageable weight profile while its 10-inch barrel provides the velocity optimization .300 Blackout requires for both supersonic and subsonic loads. The 29-round capacity magazine exceeds standard AR platform offerings, delivering sustained fire capability without frequent reloads—critical in dynamic engagements. Diamondback's engineering on this platform ensures reliable feeding and extraction across a broad range of ammunition specifications, while the pistol's modular AR-15 architecture allows for optic mounting, rail systems, and accessory integration standard to modern tactical configurations.

This platform excels for operators requiring a PDW-class system with proven AR ergonomics and minimal training curve. The .300 Blackout caliber performs exceptionally when paired with suppressors, making the DB15 ideal for noise-disciplined operations and low-signature engagements. Its compact footprint—31.5 inches overall—fits vehicle storage, breach scenarios, and close-quarters environments where full-length rifles prove unwieldy. Compatibility with standard AR-15 furniture, triggers, and bolt-group components ensures parts availability and customization depth for agencies and civilian users alike.