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13.9 Inch Government 5.56 NATO Barrel by AT3 Tactical
With a sturdy profile and proven construction, this 13.9 inch 5.56 NATO barrel features a midlength gas system for smoother recoil. This Government profile barrel uses 4150 CMV steel per Mil-B-11595E, with a corrosion-resistant black nitride finish for enhanced longevity. If you’re looking to upgrade from an M4 style, carbine length system, or building from scratch, this barrel will perform for you.
This barrel uses a .750″ diameter gas block, plus a Midlength length gas tube, both of which you can snag here at a lower, bundled cost. If you’re looking to start fresh with a complete upper assembly, check out our selection of upper and handguard combos! For this barrel, we’d recommend a handguard to be 12 inches long to ensure shooter comfort, plus room for accessories.
Specifications
- Length: 13.9 Inches
- Material: 4150 Chrome Moly Vanadium
- Profile: Government
- Finish: Black Nitride
- Gas System Length: Midlength
- Gas Block Journal: .750″
- Twist Rate: 1:7 inches
- Muzzle: 1/2×28 Threaded
- Barrel Extension: M4 Feed ramps
Where are these barrels made?
AT3 has partnered with Kinetic Manufacturing, a trusted OEM manufacturer for the firearm industry to produce these barrels. We have a philosophy that great parts for the AR don’t have to break the bank, and these barrels are no exception. Our lifetime warranty on these barrels applies to any defects due to workmanship. In the unlikely event you run into an issue, we will take care of you.
