Faxon Duty Series 8.5", Light Tapered, 9mm SAAMI, No Gas Port, 4150 QPQ Nitride AR-15 Barrel

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(11 reviews)
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Manufactured in-house, these barrels are fully stress relieved, air-gauge tested, and 11 degree target crowned to ensure superior accuracy. 

Quality is imbued into our barrels from the start. We start with the best materials, either certified 4150 Mil-Spec steel or 416-R Stainless. From there, each barrel goes through a battery of tests at each operation until finished in Nitride and final inspected. All barrels are individually checked for headspace by precision custom hardened gauges. 

  • Barrel Material: 4150
  • Barrel Type: Button Rifled 
  • Barrel Caliber: 9mm SAMMI 
  • Barrel Twist: 1:10
  • Barrel Length: 8.5"
  • Barrel Profile: Pistol Caliber Taper
  • Barrel Gas System: N/A - Blowback
  • Inside Finish: Nitride
  • Outside Finish: Nitride
  • Muzzle Thread: 1/2-28 TPI (Threads Per Inch)
  • Gas Block Diameter: N/A
  • Gas Port Diameter: N/A
  • Gas Block Journal Length: N/A
  • Barrel Extension: Colt & Glock Compatible Feed Ramps
  • Weight: .81lbs
  • 11-degree Target Crown
Barrel Material:
4150 CMV
Barrel Type:
Button Rifled
Barrel Caliber:
Barrel Length:
Barrel Twist:
Barrel Profile:
Pistol Caliber Taper
Barrel Gas System:
N/A - Blowback
Inside Finish:
Salt Bath Nitride
Outside Finish:
Salt Bath Nitride
Muzzle Thread:
Gas Block Diameter:
Gas Block Journal Length:
Barrel Extension:
Colt & Glock Compatible Feed Ramps
.81 lbs
Crown Type:
Recessed 11-degree Target Crown
Barrel Length Range:
8" - 10.5"


  • 5
    Great and accurate product

    Posted by stephen on Dec 28th 2021

    I put this on my AERO EPC and with 147gr bullets it shoots a 1.5 inch group at 30 yards!

  • 3
    Feeding /extracting issues

    Posted by Tim on Nov 28th 2019

    Purchased to replace another barrel that was not reliable in feeding Federal HST based off of friends and reviews. HST would hang up at 6 position of chamber entrance as well as FMJ flat tip ammo. Will have to try and polish that area and see if that will fix it. Using Spikes Glock lower with a Spikes Upper with Faxon 9mm bolt. Other issue that turned up was failure to extract issues, this never happened with the other manufacture barrel in it. Any suggestions to get reliability with HST ammo would be appreciated.

  • 5

    Posted by David on Mar 21st 2019

    Great barrel very accurate, great looks

  • 5
    Great product

    Posted by Lez on Apr 16th 2018

    I must say that this barrel surpassed my expectations. The finish is beautiful and it has performed flawlessly at the range. Packaging was great and it arrived in a timely manner. I am very happy I went with this barrel for my build.

  • 5
    8.5" 9mm Barrel

    Posted by Joe on Nov 6th 2017

    The quality of the barrel is excellent and shipping was quick. I am very satisfied with the range results @ 50 yds. It shoots much more accurate than I do. Would highly recommend for the price.

  • 5
    Great 9mm barrel

    Posted by kristoher on Jan 30th 2017

    Put together a 9mm pistol and the barrel is 1" at 25 yards accurate and fed everything from FMJ's to gaping hollow points, 115,124, 147 and plus P. Extremely happy with it.

  • 5

    Posted by Michael Martin on Jan 30th 2017

    Barrel is beautifully milled and finished, it fit a little loose in my Aero Precision upper. Plan to use Permatex hi temp sleeve retainer compound to insure tightest fit. best value for the money. Mike

  • 5
    Faxon 8.5" 9mm blow back barrel

    Posted by Peter on Jan 10th 2017

    I have to say that the finish quality is superb. The barrel is well made, and the cost is excellent. Great job Faxon!

  • 5
    Best bang for your buck.

    Posted by Big Gib on Sep 20th 2016

    The fit and finish is great. Can't beat the price. And performs great. I just wish it was a heavier profile, being so short, it wouldn't add much weight, but add accuracy and reduce heat build up. Don't hesitate to buy!