The LBE Unlimited AR-15 Replacement Barrel (LBE Unlimited part number BAR145M) is a 14.5-inch, 5.56x45mm NATO barrel that is cold hammer forged for a long service life and finished in black nitride for corrosion resistance. It is threaded at the muzzle, so a compatible muzzle device, brake, or suppressor mount installs without additional machining. Built to fit standard AR-15 platform rifles, it is a straightforward way to build or rebuild a carbine-length upper without sourcing a custom barrel. Note that a 14.5-inch barrel typically requires a pinned-and-welded muzzle device to reach the 16-inch federal minimum for a rifle-configured build.

Key Specifications

• Chambered in 5.56x45mm NATO (.223 Rem/5.56 NATO).
• Barrel length is 14.5 inches.
• Manufacturing process is cold hammer forging, known for barrel longevity.
• Finish is black nitride for corrosion resistance.
• The muzzle is threaded, ready for a compatible muzzle device.
• It is built to fit standard AR-15 platform rifles.

Frequently Asked Questions

How is this barrel manufactured? It is cold hammer forged, a process known for long barrel life.

Is the muzzle threaded? Yes, the muzzle is threaded, ready for a compatible muzzle device without additional machining.

Can I run this barrel at 14.5 inches on a rifle build? A 14.5-inch barrel is under the 16-inch federal minimum for a rifle-configured build unless a muzzle device is permanently pinned and welded to reach legal length; consult your local FFL/gunsmith on compliant configurations.

Buy the LBE Unlimited AR-15 14.5 Barrel

Build a carbine-length 5.56 upper on a cold hammer forged barrel instead of a bargain-bin unknown. Black nitride finish and a threaded muzzle round out a solid foundation. Browse more of our AR barrel selection and order from our Lubbock, Texas gun shop for fast, direct shipping.