Sons Of Liberty Gun Works Combat 300 Aac Blackout 13.9'' Drp Profile 5/8X24 1-7 Twist

The Sons of Liberty Gun Works Combat 300 AAC Blackout barrel is built for shooters who want a serious, no-compromise platform for suppressed or unsuppressed shooting. This 13.9-inch drop-profile barrel comes threaded 5/8x24 and features a 1-7 twist rate optimized for the .300 Blackout cartridge, making it a natural fit for dedicated short-barrel builds, close-quarters work, or anywhere you need a compact, effective rifle. Whether you're running a suppressor or running it bare, Sons of Liberty barrels are designed to perform reliably across gas system configurations without requiring an adjustable gas block—a real advantage if you want to keep your build simple and robust.

This is a combat-grade barrel from a maker known for producing duty-ready components. The drop profile keeps weight down and heat signature managed compared to heavy match profiles, and the 5/8x24 thread pitch is the standard for most modern suppressor systems. The 1-7 twist stabilizes a wide range of .300 Blackout loads, from lightweight subsonic rounds to heavier hunting and defensive ammunition, giving you flexibility in ammunition selection without chasing twist rate compromises.

Whether you're building a short-range suppressed rifle, an integrally-suppressed platform, or a versatile home-defense or hunting upper, this barrel gives you the foundation to do it right. Sons of Liberty's reputation for durability and reliability in the field makes this a solid choice for anyone serious about their .300 Blackout build.

Key Features

• Chambered in .300 AAC Blackout with optimized 1-7 twist rate
• 13.9-inch length—compact without sacrificing velocity for subsonic and supersonic rounds
• Drop-profile design reduces weight and thermal signature
• Threaded 5/8x24 for modern suppressor compatibility
• Combat-grade quality designed to run suppressed or unsuppressed without adjustable gas blocks
• Duty-ready reliability from Sons of Liberty Gun Works

Specifications

Frequently Asked Questions

Will this barrel work suppressed?

Yes. Sons of Liberty Combat barrels are designed to run reliably suppressed or unsuppressed without requiring an adjustable gas block. The 5/8x24 thread pitch is the standard suppressor mounting interface.

What ammunition does the 1-7 twist rate handle?

The 1-7 twist is optimized for .300 Blackout and stabilizes a wide range of loadings, from subsonic rounds to heavier supersonic ammunition.

Is this a drop-in replacement for my AR-15?

This is a .300 Blackout barrel designed for AR-15 platform rifles. Barrel installation requires proper tools, headspace verification, and may require gas tube length selection depending on your build configuration. If you're unsure about installation, consult a qualified gunsmith.

What is a drop profile barrel?

A drop profile reduces the diameter of the barrel forward of the gas block area compared to full-profile designs. This saves weight and reduces thermal mass while maintaining strength and accuracy.