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Brownells194200178
Brownells Ar-15 5.56 M4 Barrel Group 14.7'' 1-7 Twist, Carbine Gas$309.99
Availability: In Stock
Current Stock: Out of stock
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.
| Barrel Length | 14.7 inches |
| Caliber | 5.56x45mm NATO |
| Twist Rate | 1 in 7 inches |
| Gas System | Carbine |
| Material | 4150 Chrome Moly Steel |
| Bore Finish | Hard Chrome-Lined |
| Rifling | Button Rifled |
| Front Sight Base | F-Marked, Pre-Installed |
| Handguard Cap | Carbine Round Profile, Pre-Installed |
| Quality Control | High-Pressure Tested, Magnetic Particle Inspection, Gauged |
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.
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.
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.
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.
SKU: 194200179 • Weight: 2.3oz
Availability: In Stock
Current Stock: Out of stock
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.
| Barrel Length | 14.7 inches |
| Caliber | 5.56x45mm NATO |
| Twist Rate | 1 in 7 inches |
| Gas System | Carbine |
| Material | 4150 Chrome Moly Steel |
| Bore Finish | Hard Chrome-Lined |
| Rifling | Button Rifled |
| Front Sight Base | F-Marked, Pre-Installed |
| Handguard Cap | Carbine Round Profile, Pre-Installed |
| Quality Control | High-Pressure Tested, Magnetic Particle Inspection, Gauged |
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.
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.
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.
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.
SKU: 194200179 • Weight: 2.3oz