White Label Armory WLA-BRL-4003 AR15 Barrel 5.56 NATO 11.50" Government Profile

The White Label Armory WLA-BRL-4003 is a 5.56 NATO AR15 barrel built for shooters who want a compact, handy rifle without sacrificing reliability. At 11.50 inches, this government profile barrel strikes a balance between portability and velocity retention—ideal for home defense, close-quarters range work, or a compact tactical build. Government profile barrels are the standard for AR15s and AR10s, so if you're building or upgrading, this one will drop right in with your existing components.

White Label Armory barrels are known for solid accuracy and durability at a price that doesn't break the bank. Whether you're assembling an SBR (short-barreled rifle), setting up a pistol-length upper, or just experimenting with a shorter, handier configuration, this 11.50-inch tube gives you a proven platform. The 5.56 NATO chambering handles everything from match rounds to duty ammo, and the government profile keeps you compatible with standard handguards, gas blocks, and most existing AR15 setups.

Keep in mind that shorter barrels trade some velocity for maneuverability—typical for this class—but the 5.56 round still delivers solid performance at intermediate ranges. If you're running a short barreled rifle, you'll want to verify your local and federal regulations, especially regarding OAL (overall length) and registration requirements if applicable in your jurisdiction.

Key Features

• 5.56 NATO chamber for broad ammo compatibility
• 11.50-inch government profile for standard AR15 fit and function
• Compact length optimized for maneuverable, shorter-range builds
• Reliable performance in home defense, tactical, and SBR configurations

Specifications

Frequently Asked Questions

Will this barrel fit my AR15 upper?

Yes. This government profile barrel is the standard AR15 configuration and will work with any upper receiver designed for government profile barrels. Just verify your gas block and handguard are compatible with the 11.50-inch length and your desired gas port system.

What's the difference between government profile and other AR15 barrel profiles?

Government profile is the original mil-spec AR15 profile—thicker and stronger than lighter profiles, and compatible with standard AR15 components and handguards. It's the most versatile choice for builds and upgrades.

Can I use this barrel for an SBR build?

An 11.50-inch barrel can be part of an SBR configuration, but SBR registration and compliance requirements vary by jurisdiction. Always verify your local and federal laws before assembling a short-barreled rifle.

What ammo does this barrel shoot?

The 5.56 NATO chamber handles standard 5.56 NATO ammo. Many shooters also run .223 Remington rounds through 5.56 barrels, though 5.56 is the rated chambering for this barrel.