| Optimized ballistic performance for a standard-length duty or competition rifle. Proudly Made in the USA. |
AR15 14.5-Inch 5.56 NATO Mid-Length Barrel, Government Profile
This 14.5-inch AR-15 barrel is chambered in 5.56 NATO and runs a mid-length gas system, spreading dwell time over a longer travel path to reduce mechanical wear on internal components. The 1:7 twist rate handles a broad range of 5.56 NATO and compatible loads, making it a practical choice for a duty-style or competition upper. The government profile and 1/2x28 thread pattern accept common muzzle devices built for that thread spec. Proudly Made in the USA.
Before assembly, confirm your gas block, handguard, and barrel nut are matched to the mid-length configuration. A mid-length gas tube is required for correct dwell timing, and you should verify clearance with your chosen upper receiver and bolt carrier group.
Comparing lengths? Review the 16-inch mid-length barrel or browse the full barrels collection to match your build.
Specifications
| Caliber | 5.56 NATO |
| Barrel Length | 14.5" |
| Gas System | Mid-Length |
| Twist Rate | 1:7 RH |
| Profile | Government |
| Material | 4150 CMV |
| Finish | Black Nitride |
| Gas Block Journal | .750" |
| Gas Port Size | .076" |
| Muzzle Thread | 1/2-28 |
| Barrel Extension | M4 |
| Crown | 11° Target Crown |
| Weight | 25.6 ounces |
| Origin | Made in USA |
Frequently Asked Questions
It's chambered in 5.56 NATO with a 14.5-inch length, mid-length gas system, 1:7 RH twist, and government profile. The barrel is 4150 CMV steel with a black nitride finish, a .750" gas block journal, .076" gas port, 1/2-28 muzzle threads, M4 barrel extension, 11° target crown, and weighs 25.6 ounces.
Because this barrel uses a mid-length gas system, it requires a mid-length gas tube for correct dwell timing. Confirm your gas block, handguard, and barrel nut are all matched to the mid-length configuration before assembly.
This barrel has a 1:7 RH twist rate. A 1:7 twist handles a broad range of 5.56 NATO and compatible loads, making it a practical choice for duty-style or competition builds. Confirm your intended ammunition matches your build's needs.
The muzzle is threaded 1/2-28, which accepts common muzzle devices built for that thread spec. The government profile and .750" gas block journal use standard dimensions. Always verify clearance with your chosen upper receiver and bolt carrier group before installing.
Both share the mid-length gas system, 1:7 twist, and government profile; the main difference is length. You can review the 16-inch mid-length barrel or browse the full barrels collection to match your build. Orders ship in 2-3 business days, and free shipping is available on qualifying orders.
Specifications
| Caliber | 5.56 |
| Barrel Length | 14.5" |
| Twist Rate | 1:7 |
| Thread Pattern | 1/2x28 |