Brownells194200185
Brownells Ar-15 5.56 M4 Barrel Group 16'' 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 mil-spec performance in a 16-inch carbine package. Built by a US Government contractor to the same standards as military rifle barrels, this complete barrel assembly arrives nearly ready to drop into your build—slip ring, F-marked front sight base, and round handguard cap are all pre-installed. If you're assembling an AR carbine for hunting, home defense, or general shooting, this barrel group cuts installation time and guesswork out of the equation.
The barrel itself is 4150 chrome moly steel with a hard chrome-lined bore, rifled with a 1-7 twist that stabilizes 62-grain and heavier 5.56 ammunition reliably. Every barrel undergoes high-pressure testing and magnetic particle inspection—Brownells verifies zero defects before it ships. That quality control matters when you're betting your rifle's performance and longevity on precision metalwork. The 1-7 twist is the standard military rate, proven across decades of service rifles and widely preferred by shooters who don't want to overthink ammunition selection.
As a complete barrel group, you get the whole front-end assembly—barrel, gas tube, and all necessary hardware in one package. Your gunsmith or builder won't hunt for a mismatched gas tube length or sizing, and the carbine-length gas system pairs naturally with a 16-inch tube for balanced recoil impulse and reliability. This is serious, no-frills barrel work from a maker who's supplied the US military, not a marketing story.
| Barrel Length | 16 inches |
| Caliber/Chamber | 5.56x45mm NATO |
| Twist Rate | 1-7 |
| Gas System Type | Carbine (M4-style) |
| Material | 4150 Chrome Moly Steel |
| Bore Lining | Hard Chrome |
| Rifling Method | Button Rifled |
| Front Sight Base | F-Marked, Pre-Installed |
| Handguard Cap | Round, Pre-Installed |
| Slip Ring | Pre-Installed |
| Ammunition Compatibility | 62-grain and heavier 5.56 bullets |
Yes. This is a complete carbine-length barrel assembly with an F-marked front sight base and pre-installed handguard cap—it's designed to fit standard AR-15 platforms and mil-spec receivers. The slip ring and gas tube are already in place, so you're installing a finished barrel group, not assembling separate components.
The 1-7 twist is rated for 62-grain and heavier 5.56 ammunition. This is the military standard and will reliably stabilize everything from 62-grain full-power rounds up through heavier match or hunting loads. If you plan to shoot exclusively with lighter ammunition (under 62 grain), a faster twist may not be ideal, but for general 5.56 use, 1-7 is proven and versatile.
Yes. Each barrel is high-pressure tested and undergoes magnetic particle inspection to verify zero defects before shipment. Brownells manufactures to US Government contractor standards, so you're getting the same verification process applied to military-grade barrels.
SKU: 194200182 • Weight: 2.5oz
Availability: In Stock
Current Stock: Out of stock
The Brownells AR-15 5.56 Socom barrel group delivers mil-spec performance in a 16-inch carbine package. Built by a US Government contractor to the same standards as military rifle barrels, this complete barrel assembly arrives nearly ready to drop into your build—slip ring, F-marked front sight base, and round handguard cap are all pre-installed. If you're assembling an AR carbine for hunting, home defense, or general shooting, this barrel group cuts installation time and guesswork out of the equation.
The barrel itself is 4150 chrome moly steel with a hard chrome-lined bore, rifled with a 1-7 twist that stabilizes 62-grain and heavier 5.56 ammunition reliably. Every barrel undergoes high-pressure testing and magnetic particle inspection—Brownells verifies zero defects before it ships. That quality control matters when you're betting your rifle's performance and longevity on precision metalwork. The 1-7 twist is the standard military rate, proven across decades of service rifles and widely preferred by shooters who don't want to overthink ammunition selection.
As a complete barrel group, you get the whole front-end assembly—barrel, gas tube, and all necessary hardware in one package. Your gunsmith or builder won't hunt for a mismatched gas tube length or sizing, and the carbine-length gas system pairs naturally with a 16-inch tube for balanced recoil impulse and reliability. This is serious, no-frills barrel work from a maker who's supplied the US military, not a marketing story.
| Barrel Length | 16 inches |
| Caliber/Chamber | 5.56x45mm NATO |
| Twist Rate | 1-7 |
| Gas System Type | Carbine (M4-style) |
| Material | 4150 Chrome Moly Steel |
| Bore Lining | Hard Chrome |
| Rifling Method | Button Rifled |
| Front Sight Base | F-Marked, Pre-Installed |
| Handguard Cap | Round, Pre-Installed |
| Slip Ring | Pre-Installed |
| Ammunition Compatibility | 62-grain and heavier 5.56 bullets |
Yes. This is a complete carbine-length barrel assembly with an F-marked front sight base and pre-installed handguard cap—it's designed to fit standard AR-15 platforms and mil-spec receivers. The slip ring and gas tube are already in place, so you're installing a finished barrel group, not assembling separate components.
The 1-7 twist is rated for 62-grain and heavier 5.56 ammunition. This is the military standard and will reliably stabilize everything from 62-grain full-power rounds up through heavier match or hunting loads. If you plan to shoot exclusively with lighter ammunition (under 62 grain), a faster twist may not be ideal, but for general 5.56 use, 1-7 is proven and versatile.
Yes. Each barrel is high-pressure tested and undergoes magnetic particle inspection to verify zero defects before shipment. Brownells manufactures to US Government contractor standards, so you're getting the same verification process applied to military-grade barrels.
SKU: 194200182 • Weight: 2.5oz