Daniel Defense DD4 RIII upper receiver with 16-inch barrel and National Match profile. Precision-engineered for accuracy and reliability in a versatile mid-length configuration.
The Daniel Defense DD4 RIII represents the pinnacle of American rifle manufacturing. This upper receiver assembly features a 16-inch National Match profile barrel—a choice that reflects serious thought about the balance between velocity, handling, and practical accuracy.
This is not a rifle built for compromise. Daniel Defense has engineered the DD4 RIII for shooters who understand that precision begins with quality components. The National Match barrel profile delivers the accuracy you need, while the 16-inch length keeps the rifle manageable in real-world conditions.
Whether you're building a precision rifle or upgrading an existing platform, this upper receiver assembly sets a standard that few manufacturers can match.