Diamondback Firearms DB1222C061 DB10 308 13.5" 21-Round FDE Pistol

The Diamondback Firearms DB1222C061 DB10 .308 13.5" 21-Round FDE Pistol is a short-barreled rifle engineered for operators who demand compact firepower without sacrificing velocity or magazine capacity. Built on the proven AR-10 platform in .308 Winchester, this 13.5-inch pistol configuration delivers intermediate-range capability in a form factor that excels in vehicle operations, confined-space entries, and tactical mobility scenarios. The flat dark earth finish blends professional aesthetics with practical durability across varied operational environments.

The DB10's 13.5-inch barrel balances muzzle velocity retention with package size—critical for operators transitioning between vehicles and structures where a full-length rifle becomes a liability. The 21-round magazine capacity provides substantial firepower for extended engagements while maintaining control during tactical movement. At 8.5 lbs, the pistol-configured AR-10 remains manageable in dynamic shooting positions, and the .308 platform delivers superior penetration and terminal ballistics compared to intermediate cartridges, making it relevant for barrier defeat and distance engagement where precision rifle alternatives cannot deploy.

Law enforcement tactical teams, civilian defense-minded operators, and precision shooters benefit most from this configuration. The pistol-length gas system and AR-10 ergonomics remain compatible with standard mil-spec controls, ensuring rapid deployment by trained personnel without a learning curve. Users should verify local regulations regarding short-barreled rifle registration and ownership requirements before purchase, as the 13.5-inch barrel may require ATF Form 1 registration or falls under NFA restrictions in certain jurisdictions. Pair with appropriate optics, slings, and ammunition storage for full operational readiness.