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16 Inch .300 Blackout Barrel by AT3 Tactical
A 16 inch .300 Blackout barrel makes swapping to a heavier hitting cartridge in your favorite rifle simple. This 4150 CMV barrel features a medium profile, providing plenty of support for mounting a suppressor, without feeling cumbersome in the field. It also gets a black nitride finish for corrosion resistance, and has M4 feed ramps for optimal reliability.
This barrel uses a .750″ diameter gas block, plus a Pistol 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 at least 12 to 15 inches long for shooter comfort, and space for accessories.
Specifications
- Length: 16 Inches
- Material: 4150 Chrome Moly Vanadium
- Profile: Medium
- Finish: Black Nitride
- Gas System Length: Pistol
- Gas Block Journal: .750″
- Twist Rate: 1:7 inches
- Muzzle: 5/8×24 Threaded
- Barrel Extension: M4 Feed ramps
- Weight: 29 oz.
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.
Specifications:
| Caliber | .300 Blackout |
| Barrel Length | 16 inches |
| Barrel Twist Rate | 1:7 inches |
| Barrel Material | 4150 CMV |
| Muzzle Threads | 5/8/2024 |
| Barrel Finish | Black Nitride |
| Gas Block Size | .750″ Gas Block |
| Fit | AR-15 |
| Barrel Profile | Medium |
| Barrel Gas System | Pistol |
| Gas Block Journal Length | 1.9 inches |
| Barrel Extension | M4 |
| Weight | 29 ounces |
