Brownells Ar-15 5.56 Socom Barrel Group 14.7'' 1-7Twist,Carbine Gas

The Brownells AR-15 5.56 SOCOM barrel group delivers the reliability of a government-contractor build in a practical 14.7" carbine package. Built for shooters who want a direct-drop, inspection-verified barrel assembly that's ready to shoot, this 1-7 twist barrel accepts and reliably cycles full-power rifle ammunition—especially rounds from 62 grains and heavier. Chrome-lined bore, button-rifled and hard chrome-finished, this is the kind of precision you get when you start with military-spec standards.

Brownells sources these assemblies from a US Government Contractor and subjects each one to high-pressure testing, magnetic particle inspection, and gauging for zero tolerance on defects. The 4150 chrome moly steel construction handles the pressures of 5.56x45mm NATO reliably, and the 1-7 rate of twist is the go-to choice for modern rifle ammunition across the spectrum. Every barrel ships marked with chamber and twist specs for instant verification.

What makes this a real time-saver: the slip ring, F-marked front sight base, and carbine-profile handguard cap come pre-installed. You're not hunting for parts or struggling with fitment—drop this into your build, torque it down, and you're ready to function-check. The round handguard cap is appropriate for the 14.7" length, keeping the profile sleek and purposeful.

This is the choice for builders who skip the guessing game. Government-spec barrels, vetted for accuracy and durability, without the premium markup.

Key Features

• Government-contractor manufactured to military-specification standards
• 4150 chrome moly steel with hard chrome-lined, button-rifled bore
• High-pressure tested and magnetic particle inspected—zero-defect tolerance
• 1-7 twist rate reliably handles 62-grain and heavier 5.56x45mm ammunition
• F-marked front sight base pre-installed for proper sight height
• Slip ring and carbine-profile handguard cap included and ready to install
• Direct-drop compatibility with AR-15 platforms

Specifications

Frequently Asked Questions

What ammunition does the 1-7 twist rate handle?

The 1-7 twist is rated for 62-grain and heavier 5.56x45mm ammunition, making it the versatile standard for modern rifle rounds. It's the twist rate most commonly found on military and modern sporting rifles.

Is the front sight base compatible with standard AR-15 sight height?

Yes. The F-marked front sight base is the military-standard height and is pre-installed on this barrel assembly, so your sights will co-witness properly with standard AR-15 upper receivers and optic mounting heights.

What comes pre-installed and ready to go?

The slip ring, F-marked front sight base, and carbine-profile handguard cap are all pre-installed. You'll need to secure the barrel to your receiver and time the gas tube, but the main assembly components are already in place.

Is this barrel drop-in compatible with my AR-15 build?

This barrel group is designed for standard AR-15 platforms with carbine-length gas systems. Verify your upper receiver and gas system configuration match a carbine gas setup before installation.