Daniel Defense 16″ Cold Hammer Forged Barrel, 5.56 NATO, 1:7 Twist, M4 Profile, Carbine-Length, with Fixed Front Sight Base

Product Description

The Daniel Defense 16″ Cold Hammer Forged Barrel is a 5.56mm NATO, 1:7 twist, M4-profile barrel on a carbine-length gas system in the fixed front sight base configuration, and at 16 inches it is the length that builds a standard rifle with no NFA paperwork and no permanently attached muzzle device.

Sixteen inches is the practical default for a civilian AR-15. It clears the federal minimum rifle barrel length on its own, which means your muzzle device stays removable: you can run a flash hider today, a brake next season, and a suppressor mount after that without a gunsmith or a torch. For anyone who wants to experiment with muzzle devices or move a can between hosts, that freedom is worth more than the inch and a half of length saved by a 14.5″ barrel.

The fixed front sight base version gives you a pinned gas block and front sight tower as a single unit. It is the right pick for a retro or duty-pattern build with drop-in handguards or a quad rail, and it means your front iron sight is permanent and cannot drift. If you want a long free-float M-LOK tube over the gas block instead, the low profile gas block configuration is the version to look for.

Key Facts

• Brand: Daniel Defense
• Model: 16″ 5.56mm, Carbine, 1:7, M4
• Manufacturer Part Number: 07-075-10114
• Caliber: 5.56mm NATO
• Barrel Length: 16″
• Twist Rate: 1:7
• Barrel Profile: M4
• Gas System: Carbine Length
• Manufacturing Process: Cold Hammer Forged
• Material: 4150 Chrome Moly Vanadium (CMV) steel
• Bore Finish: Chrome lined
• Exterior Finish: Mil-Spec Heavy Phosphate
• Muzzle Thread: 1/2×28 TPI
• Diameter at Gas Port: .750″
• Barrel Extension: A4
• Barrel Weight (bare barrel): 1.75 lbs

16″ versus 14.5″: which should you buy?

Buy the 16″ barrel if you want a rifle you can finish yourself with hand tools and keep flexible. No pin and weld, no NFA question, and muzzle devices remain a bolt-on decision. Buy 14.5″ if the handling of a true M4 matters more to you than muzzle device flexibility and you are prepared to have a device permanently attached.

Fitment and installation notes

This barrel drops into any standard AR-15 or M16-pattern upper receiver on its A4 extension. You will need a carbine-length gas tube, a barrel nut suited to your handguard, and the correct torque sequence. Because this is the fixed front sight base configuration, your handguard must be one designed to index against a front sight tower, or a free-float tube short enough to terminate behind it.

Round out the build from our upper receiver parts, choose a threaded muzzle devices to suit, or step up to a factory-assembled option in our Daniel Defense uppers.

Ordering from Western Sport in Roanoke, TX

Western Sport in Roanoke, Texas has been a licensed FFL and SOT since 2007 and is a Daniel Defense master dealer. Our on-site gunsmith installs barrels, checks headspace and fits handguards daily, so if you would rather hand us the parts than buy a wrench set, call 817-393-4000.

Frequently Asked Questions

Q: Is a 16″ barrel legal to install on a rifle without NFA paperwork?

A: Yes. Sixteen inches meets the federal minimum barrel length for a rifle, so a 16″ barrel on a rifle-configured receiver is an ordinary rifle with no National Firearms Act registration involved. No tax stamp, no SOT transfer, and no permanently attached muzzle device required.

Q: Can I change muzzle devices on this barrel whenever I want?

A: Yes, and that is the main advantage of 16 inches. The 1/2×28 TPI threads stay free because the barrel already meets the 16-inch minimum on its own. Swap a flash hider for a brake, or fit a suppressor mount, with a crush washer or timing shims and a wrench.

Q: What handguards fit the fixed front sight base version?

A: Mil-spec two-piece drop-in handguards, classic quad rails that clamp between the delta ring and front sight tower, and free-float tubes short enough to stop behind the sight base. A full-length free-float rail that runs past the gas block will not clear the tower.

Q: Will 1:7 twist shoot lighter 55-grain ammunition accurately?

A: Yes. A 1:7 twist is specified to stabilise heavy 5.56 projectiles such as 77-grain match bullets, and it handles common 55-grain and 62-grain loads without trouble. Very light varmint bullets in the 35 to 40-grain range are the only place an extremely fast twist occasionally causes issues, and most shooters never encounter it.

Q: Does this barrel need an FFL to ship?

A: No. Barrels are parts, not firearms, so this one ships straight to your door with no transfer, no 4473 and no background check. Only serialized receivers require an FFL. Component restrictions exist in some states and cities, so check your own rules before ordering if you are outside Texas.

Q: How does the M4 profile compare with the Lightweight profile at 16 inches?

A: The M4 profile carries more steel forward of the gas block and includes the M203 cut, so it resists heat better and balances further forward. Daniel Defense’s Lightweight 16″ barrel is described as being for shooters looking to shed a few ounces without sacrificing durability or accuracy.

Additional information