Diamondback Firearms DB15 .338 ARC 10.5 inches Threaded Barrel Pistol

The Diamondback Firearms DB15 .338 ARC 10.5-inch threaded barrel pistol represents a modern approach to intermediate-caliber short-barreled platforms. Built for operators who demand versatility without sacrificing ballistic performance, this AR-pattern pistol bridges the gap between compact deployability and effective downrange energy. The .338 ARC cartridge delivers superior penetration and terminal performance compared to 5.56 NATO, making it ideal for defensive applications, hunting, or tactical training where barrier defeat and accuracy matter.

The 10.5-inch barrel is optimized for the .338 ARC's ballistic profile, providing a balance between velocity retention and maneuverability in confined spaces—critical for vehicle egress, building clearance, and close-quarters work. The threaded muzzle accepts suppressors, compensators, and flash hiders without requiring permanent modification, allowing users to customize the platform for mission-specific requirements. AR-15 platform ergonomics ensure immediate operator familiarity, rapid sight picture acquisition, and straightforward manual of arms for law enforcement and military personnel transitioning from standard rifle systems.

The DB15 pistol configuration appeals to operators requiring a compact rifle-caliber option that maintains full rifle functionality without NFA restrictions in most jurisdictions. Diamondback's DB15 platform has proven reliability in professional use, and the .338 ARC ammunition supply has expanded significantly among duty and commercial sources. This model pairs seamlessly with modern optics mounting systems, rail-mounted accessories, and after-market trigger upgrades common to AR-15 compatible components, enabling rapid customization to individual operational requirements.