Daniel Defense DD-9067 5.56mm Rifle - 16" Barrel, 1:7 Twist

The Daniel Defense DD-9067 5.56mm rifle barrel with 16" barrel length and 1:7 twist rate delivers the accuracy and durability you need for everything from defensive shooting to precision rifle competition. Built from cold hammer-forged chromium-molybdenum-vanadium alloy steel, this barrel is engineered to the same exacting standards Daniel Defense applies to complete rifle systems—no compromise on materials or manufacturing. The 1:7 twist handles the full spectrum of modern 5.56 ammunition weights, making it versatile for both lighter tactical rounds and heavier, longer-range projectiles.

Every DD-9067 barrel undergoes magnetic particle inspection (MPI) to catch internal flaws before they become reliability problems downrange. The manganese phosphate finish resists corrosion and wear, holding up under hard use and frequent cleaning. An M4-type feed ramp extension ensures reliable chambering across quality ammunition, and the .750" OD at the gas block plays nicely with standard AR handguards and rail systems. Whether you're building a 16" midlength AR for home defense, competition, or general marksmanship, this barrel gives you the foundation to do it right.

Daniel Defense barrels are known for sub-MOA potential when paired with quality uppers, lower receivers, and trigger groups. The 16" length strikes the practical balance most shooters want: enough sight radius and velocity for precision work, but still handy enough for close-quarters movement. If you're replacing a factory barrel or upgrading a stripped upper receiver, the DD-9067 is a no-nonsense choice backed by real-world testing in professional and competitive environments.

Key Features

• Cold hammer-forged chromium-molybdenum-vanadium steel for strength and longevity
• Magnetic particle inspection (MPI) certifies internal material integrity
• Manganese phosphate finish resists corrosion and surface wear
• M4-type feed ramps for reliable feeding
• 1:7 twist rate accommodates a wide range of 5.56 bullet weights
• .750" OD at gas block for universal AR handguard compatibility

Specifications

Frequently Asked Questions

Will a Daniel Defense DD-9067 barrel work with my AR-15 upper receiver?

Yes. The DD-9067 is a standard 5.56 NATO barrel with M4-type feed ramps and .750" OD at the gas block, making it compatible with any AR-15 upper receiver that accepts a 5.56 barrel and standard handguards.

What ammunition types does the 1:7 twist rate stabilize?

The 1:7 twist is a versatile rate that stabilizes both lighter 5.56 rounds (55-62 grain) and heavier match and hunting loads up to 77 grains. This makes it a good general-purpose choice for shooters running a variety of ammunition types.

Is this barrel suitable for long-range precision shooting?

The DD-9067 is built to match-grade standards with MPI certification and cold hammer-forging, giving it excellent accuracy potential. Combined with a quality upper receiver, bolt carrier group, and trigger, it is capable of sub-MOA groups. The 16" length provides adequate sight radius for precision work, though very long-distance applications may benefit from a longer barrel.

What does the manganese phosphate finish do?

Manganese phosphate is a durable, corrosion-resistant coating applied during manufacturing. It protects the barrel from rust and surface wear during handling, shooting, and storage, and is easier to maintain than bare steel.