Ballistic Advantage 5.56 12.3 Inch AR 15 Barrel – Hanson Profile with .750 Gas Block – Nitride

SKU: BABL556033F

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AT3™ AR 15 Gas Tube & Carbine Gas Tube Length

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Dead Air Armament Keymount Flash Hider - .223/5.56 NATO - 1/2×28

Dead Air Armament Keymount Flash Hider – .223/5.56 NATO – 1/2×28


Compact AR-15 Pistol Barrel with Better Velocity for Range

When you’re choosing a short AR barrel, there’s question that needs to be answered: how much barrel length and velocity are you willing to sacrifice for shortening your gun?  With this 12.3″ barrel from Ballistic Advantage, you’re still dropping around 4 inches of length compared to the standard carbine, while retaining enough barrel length to reach out to 350 yards effectively.

If you’re planning to run a suppressor on your build, consider what muzzle device is best-suited if you want quick detachment.  The Gemtech Quickmount Flash Hider, or the Dead Air Keymount Muzzle Brake are both solid candidates.  Be sure to check out our full selection of muzzle devices for one to suit your build.

All Performance Series Barrels feature a Nickel Boron Coated Extended M4 Feed Ramp Extension.  Hanson Series Barrels also include a lo-pro gas block and coil pin, ready for permanent and secure attachment. Aftermarket piston kits don’t work with these barrels – they are not compatible.

Sub-MOA Guarantee

Buying a Ballistic Advantage barrel means guaranteed accuracy. Ballistic Advantage guarantees Sub-Minute-of-Angle (MOA) accuracy with match grade ammunition through their barrels.


  • Length: 12.3″
  • Material: 4150 Chrome Moly Vanadium
  • Profile: Hanson
  • Finish: QPQ Corrosion Resistant
  • Twist Rate: 1:7 inches
  • Gas System Length: Carbine
  • Gas Block Journal: 1.03″ Gas Block Seat for .750″ Low Profile Gas Blocks Only
  • Muzzle: 1/2×28 Threaded
  • Weight: 22 oz. (with gas block)
  • Other Info: HP and MPI Tested


Caliber5.56 NATO/.223 Remington
Barrel Length12.3 inches
Barrel Twist Rate1:7 inches
Barrel Material4150 CMV
Muzzle Threads1/2/2028
Barrel FinishBlack Nitride
Gas Block Size.750″ Gas Block
Barrel ProfileHanson
Barrel Gas SystemCarbine
Gas Block Journal Length1.03 inches
Barrel ExtensionM4
Weight22 ounces

Have Questions About this Product?

The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.

If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.

Ballistic Advantage Warranty!

If for any reason you have a warranty issue with one of our products, please describe your situation, include your name and order number or transaction ID. One of our technical specialists will then review your claim and contact you within 5-7 business days.

PLEASE NOTE: We cannot provide warranty work if your items have been altered by you or anyone other than Ballistic Advantage from their original state.

Please call 407-347-4584 if you have any questions regarding this policy.

Disclaimer: Manufacturer’s warranty is subject to change without prior notice.