Timber Creek Outdoors TC556MED16 16" 5.56 NATO Replacement Barrel, Mid-Length Gas System, M4 Feed Ramps, Black Nitride

A quality AR-15 barrel is the heart of reliable performance, and the Timber Creek Outdoors TC556MED16 16" 5.56 NATO replacement barrel delivers the kind of mid-length gas system balance that works for both shooters building a new rifle and those upgrading an existing one. This 16-inch barrel in 5.56 NATO is finished in black nitride—a proven coating that resists corrosion and handles hard use without fussing. Whether you're assembling an AR for hunting, training, or defensive work, a mid-length gas system offers a practical middle ground: smoother recoil impulse than carbine-length, easier handling than rifle-length, and good parts longevity.

The TC556MED16 ships with M4 feed ramps, so it plays nicely with standard AR-15 upper receivers and ammunition. Swapping barrels is straightforward work if you have a barrel wrench and headspace gauge—no gunsmith required—and this Timber Creek option gives you a reliable way to refresh your upper without breaking the bank or settling for mystery-meat hardware.

Black nitride finish stands up to field conditions better than bare steel, and a mid-length gas tube is forgiving on a variety of ammo and suppressor combinations if you ever decide to go that route. Timber Creek Outdoors has built a solid reputation for no-nonsense parts, and this barrel reflects that: honest steel, honest finish, no hype.

Key Features

• 16-inch barrel length—compact enough for close-quarters or hunting in timber, long enough to wring out 5.56 velocity
• Mid-length gas system—smoother recoil and better reliability across a wide range of ammunition
• M4 feed ramps—drop-in compatibility with standard AR-15 uppers
• Black nitride finish—corrosion-resistant and durable in field conditions
• 5.56 NATO chambering—works with both 5.56 NATO and .223 Remington ammunition

Specifications

Frequently Asked Questions

Will this barrel fit my AR-15 upper receiver?

Yes, the TC556MED16 ships with M4 feed ramps and is designed as a drop-in replacement for standard AR-15 uppers. You'll need a barrel wrench to remove the old barrel and install this one, and a headspace gauge to verify proper headspace before firing.

What's the difference between mid-length and carbine-length gas systems?

A mid-length gas tube is longer than a carbine-length tube, which means the bolt carrier group cycles with a smoother, less abrupt impulse. Many shooters find mid-length offers a good balance between recoil management and reliability across different ammunition loads.

Can I use .223 Remington ammo in this barrel?

The TC556MED16 is chambered in 5.56 NATO, which safely fires both 5.56 NATO and .223 Remington ammunition. Always verify your ammunition marking and follow safe shooting practices.

Why is the barrel coated in black nitride?

Black nitride is a surface treatment that hardens the steel and provides excellent corrosion resistance without adding significant weight or thickness. It's a field-proven finish that holds up well to moisture, handling, and extended use.