Daniel Defense DD4 RIII 5.56 16" - AR-15 Rifle

The Daniel Defense DD4 RIII 5.56 16" is built for people who can't afford a malfunction. Engineered in 5.56 to the same standards demanded by military and law enforcement users who stake their lives on their equipment.

The Daniel Defense DD4 RIII 5.56 16" brings 5.56 capability to a semi-automatic AR-15 rifle, using a mid-length direct impingement operating system designed for dependable function in any condition.

Duty-Grade Reliability: Every component is selected and tested to perform under sustained fire, adverse weather, and the kind of use that reveals flaws in lesser designs. This 5.56 platform is built for the worst case.

Precision From the Factory: Tight manufacturing tolerances and premium barrel specifications deliver consistent, sub-MOA-capable accuracy that holds up as round counts climb into the thousands.

Trusted by Professionals: This platform or its commercial equivalent is actively used by military, law enforcement, and special operations units who select their equipment based on performance, not marketing.

Lifetime Investment: Premium materials and construction mean this rifle will outlast budget alternatives by a significant margin — a firearm that genuinely improves with a proper maintenance schedule.

• Caliber: 5.56
• Barrel Length: 16"
• Barrel Twist: 1:7"
• Gas System: Mid-Length Direct Impingement
• Handguard: M-Lok Free-Float
• Muzzle Threading: 1/2x28
• Magazine Capacity: 30-Round
• Finish: Type III Hardcoat Anodized
• Origin: Made in the USA

Fully compatible with standard AR-15 lower receivers and STANAG-pattern 5.56 magazines. Works with mil-spec carbine buffer systems, standard lower parts kits, and the broad ecosystem of AR-15 aftermarket accessories.

Machined from 7075-T6 and coated with Type III Hardcoat Anodized, the receiver set offers durable protection against wear and environmental exposure while maintaining precise fit between components.

Designed for users who demand mil-spec reliability and match-grade accuracy in the same package — professional duty, competition, and advanced training all fall within this platform's wheelhouse.

Daniel Defense produces premium AR-15 rifles trusted by elite military and law enforcement units globally, backed by a limited lifetime warranty and Made in USA manufacturing.