Colt Le6920 Replacement Barrel 16In

The Colt LE6920 Replacement Barrel 16-inch is factory-original hardware for shooters and builders who need a direct swap or upgrade for their Colt AR-15 platform rifle. Whether you're replacing a worn barrel on a duty or competition gun, or building a custom AR on a Colt receiver, this barrel delivers the same specifications and quality control as the barrels Colt installs at the factory—no guesswork, no compatibility surprises.

Built around a 1:7-inch twist rate and six-groove rifling, this barrel handles the full range of 5.56 NATO and .223 Remington loads effectively. The M4-style feed ramps ensure reliable feeding from standard magazine-fed setups, while chrome lining inside the bore resists corrosion and extends service life in field conditions. A carbine-length gas system keeps the profile compact and cycles properly with standard AR-15 bolt carrier groups.

The muzzle is threaded 1/2"-28 TPI, the industry standard for AR-15s, so your existing muzzle devices—flash hiders, suppressors, or compensators—will thread right on. Colt offers this barrel in multiple configurations: as a stripped barrel if you're swapping components yourself, with the barrel extension already installed to save a step, or as a complete assembly that includes the barrel nut, front-sight tower, post, and sling swivel for a faster, more straightforward build or replacement. That flexibility means you can match your build style and tooling.

If you're working with a Colt LE6920 platform or a Colt-pattern upper receiver, this is genuine Colt hardware backed by decades of AR-15 manufacturing experience.

Key Features

• 1:7-inch twist rate with six-groove rifling—proven for 5.56 NATO and .223 Remington
• M4-style feed ramps for reliable feeding across standard AR-15 magazines
• Chrome-lined bore resists corrosion and extends barrel life
• Carbine-length gas system configuration
• 1/2"-28 TPI threaded muzzle for standard AR-15 muzzle devices
• Available as stripped barrel, with extension, or as complete assembly with front sight, barrel nut, and sling swivel
• Factory Colt quality and specifications

Specifications

Frequently Asked Questions

Will this barrel fit my Colt LE6920 rifle?

Yes—this is a factory Colt replacement barrel designed for the LE6920 platform and other Colt AR-15 receivers. It uses standard AR-15 dimensions and installation methods, so it will work on any standard Colt-pattern upper receiver.

What configuration options are available?

Colt offers three options: a stripped barrel (just the barrel itself), a barrel with the extension pre-installed, or a complete assembly that includes the barrel nut, front-sight tower, post, and sling swivel. Choose based on your build experience and what components you already have on hand.

What ammunition does the 1:7-inch twist rate handle?

The 1:7-inch twist is ideal for 5.56 NATO and .223 Remington ammunition across a wide range of bullet weights and loadings.

Can I use my existing muzzle devices on this barrel?

Yes—the barrel is threaded 1/2"-28 TPI at the muzzle, the standard for AR-15s, so any flash hider, compensator, or suppressor with that threading will install directly.