Diamondback Firearms Db15 338arc 10.5" 26-Round Pistol

The Diamondback Firearms DB15 338ARC 10.5" 26-Round Pistol represents a modern tactical platform purpose-built for operators and shooters who demand a compact, high-capacity rifle platform in an intermediate cartridge. This semi-automatic pistol bridges the gap between traditional AR-15 ergonomics and the ballistic advantages of the 338 ARC cartridge, making it ideal for defensive applications, law enforcement patrol rifles, and tactical training environments where barrel length restrictions or vehicle storage demands compact firearm solutions.

Built on a proven direct-impingement AR platform, the DB15 maintains the reliable operating system trusted by military and law enforcement worldwide while chambering the 338 ARC—a cartridge engineered for superior ballistic performance in short barrels compared to traditional 5.56mm or 300 Blackout alternatives. The 10.5-inch barrel delivers consistent velocity and energy retention critical for intermediate-range engagements, while the 26-round capacity provides substantial firepower without excessive magazine bulk. At 7.5 lbs, this pistol maintains a shootable, maneuverable profile suitable for vehicle operations and tactical deployments where weight and handling speed are operational factors.

This configuration serves law enforcement agencies, private security professionals, and civilian tactical shooters requiring a legally-compliant pistol-configured rifle with the terminal ballistics of a larger intermediate cartridge. The 338 ARC's optimized powders and bullet construction excel in barrier penetration and expansion testing, making it a serious consideration for duty applications. Operators should note that 338 ARC ammunition availability is expanding but remains more specialized than mainstream calibers—factor supply chains into your procurement strategy, and verify your 26-round magazine configuration complies with all applicable federal and state regulations before deployment or carry.