Ballistic Advantage 5.56 17.7 Inch AR 15 Barrel – Hanson Profile with Lo Pro Gas Block – Nitride

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Highly Reliable 3-Gun Ready Barrel with Sub-MOA Accuracy Guarantee

17.7 inches seems like an oddball barrel length, but it makes a lot of sense here.  The midlength gas system keeps recoil mild, while the additional length provides extra velocity, and a longer dwell time for reliability.  The Hanson profile also makes the rifle as a whole balance better, reducing barrel whip and increasing accuracy by putting mass where it needs to be – behind the gas block.

All Performance Series Barrels feature a Nickel Boron Coated M4 Feed Ramp Extension.  This barrel also comes with a pre-drilled gas block and coil pin, giving you rock-solid installation with no need to worry about timing or set screws backing out.  And of course, the barrel is finished inside and out with black nitride, which protects from the elements and regular wear and tear.

Sub-MOA Guarantee

Buying a Ballistic Advantage barrel means guaranteed accuracy. All Ballistic Advantage barrels are guaranteed to give Sub-Minute-of-Angle (MOA) accuracy with match grade ammunition.


  • Length: 17.7″
  • Material: 4150 Chrome Moly Vanadium
  • Profile: Hanson
  • Finish: QPQ Corrosion Resistant
  • Twist Rate: 1:7 inches
  • Gas System Length: Mid-Length
  • Gas Block Journal: 1.03″ Gas Block Seat for .750″ Low Profile Gas Blocks Only
  • Muzzle: 1/2×28 Threaded
  • Weight: 31 oz.
  • Other Info: HP and MPI Tested

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.

Customer Reviews

Based on 1 review
Cordell Terhorst
Ballistic Advantage Barrel

AT3 tactical seems to be a growing AR-builders site that has a wide range of in-stock products. Especially these days when everyone is scare-buying, it is refreshing to see a website that has products in stock and ready to ship; not to mention for a good price. This barrel was shipped and got to me in less than a week. Simple and easy.
I haven’t gotten all my parts for my new build yet, so naturally I haven’t broke in the new barrel. However you can’t go wrong with the manufacture quality provided by BA. Very satisfied with my experience.

Thanks for sharing your feedback! We're glad you're satisfied with your purchase.