Diamondback Firearms DB1758K001 DB15 5.56 NATO 16" 31-Round Carbine

The Diamondback Firearms DB15 5.56 NATO 16" carbine is a purpose-built rifle engineered for law enforcement patrol, home defense, and tactical training environments where reliability and ergonomic efficiency are non-negotiable. This platform addresses the operational demands of professionals and serious civilian shooters who require a modern direct-impingement carbine capable of delivering consistent performance across high-round-count training cycles and duty deployment. The 16-inch barrel strikes the proven balance between velocity retention, handling speed, and legal compliance across all 50 states.

Built on the legacy AR-15 platform, the DB15 carbine features a cold-hammer-forged barrel chambered in 5.56 NATO, ensuring chamber consistency and extended barrel life under sustained fire. The 31-round magazine capacity provides sufficient ammunition reserve for extended engagement scenarios without frequent reloads, a critical consideration in defensive contexts. At 13.2 lbs loaded weight, the carbine maintains maneuverability in confined spaces typical of building searches and vehicle operations while remaining stable for precision shooting at intermediate distances. The 16-inch barrel length and compact overall profile make this rifle ideal for operators transitioning between different tactical environments without sacrificing the velocity floor needed for terminal performance and barrier penetration.

This DB15 carbine is optimized for duty personnel, reserve or full-time law enforcement, military support roles, and civilian shooters investing in a defensive rifle platform with proven aftermarket support and parts compatibility. The direct-impingement design and standard AR-pattern controls ensure seamless integration with existing duty gear, slings, optics mounts, and training muscle memory. Users deploying this carbine for home defense, patrol rifle courses, or 3-gun competition will benefit from the lightweight frame, quick-handling profile, and ammunition capacity that reduces reload frequency during high-stress events.