White Label Armory WLA-BRL-4006 AR15 Barrel 5.56 NATO 16" Government Profile

The White Label Armory WLA-BRL-4006 is a 5.56 NATO AR15 barrel built to the government profile specification, giving you a proven, mil-spec design in a compact 16-inch package. Whether you're building a go-to rifle for the range, home defense, or hunting medium game, this barrel delivers the accuracy and reliability that comes from a time-tested profile. At 16 inches, you get a practical balance of velocity, handling, and portability—ideal for anyone who wants a versatile AR without the SBR paperwork.

Government profile barrels are the standard for good reason: they're durable, easy to find parts for, and proven in the field across thousands of rifles. This White Label Armory barrel is a smart choice for builders who want solid performance without paying premium prices for exotic geometries you may never need. The 5.56 NATO chamber handles both standard 5.56 rounds and .223 Remington, giving you flexibility at the range or in the field.

If you're replacing a worn barrel, finishing a build, or just want a handy backup barrel for your AR, this government profile design keeps your rifle running efficiently and on target. White Label Armory barrels are known for consistent machining and reliability—the kind of component that works when you need it to work.

Key Features

• 5.56 NATO chambering—accepts both 5.56 and .223 Remington ammunition
• 16-inch length for balanced velocity and handling
• Government profile—mil-spec standard geometry for proven durability and compatibility
• Drop-in replacement for standard AR15 upper receivers

Specifications

Frequently Asked Questions

Will this barrel work on my AR15 upper receiver?

Yes, the government profile is the standard mil-spec design and will fit any standard AR15 upper receiver. It's a straightforward replacement or addition to your build.

Can I shoot .223 Remington through a 5.56 NATO barrel?

Yes. A 5.56 NATO chamber safely handles both 5.56 NATO and .223 Remington ammunition. This gives you ammunition flexibility at the range and in the field.

Is 16 inches the right length for a rifle or carbine?

A 16-inch barrel is a proven middle ground: long enough for decent velocity and sight radius, compact enough for easy handling in tight spaces or vehicle use. It's the most common AR15 barrel length for this reason.

What does "government profile" mean?

Government profile refers to the mil-spec barrel taper and dimensions established for military AR15s. It's a standard geometry optimized for durability and reliability, and it's compatible with the vast majority of AR parts and components.