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7.5", Gov't / Socom, 300 BLK, Pistol-Length, 4150 QPQ


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  • Product Description

    300 BLK with pistol gas system for optimum reliability with super or subsonic ammo. 

    Faxon Firearms barrels are the pinnacle of value. Manufactured 100% in-house from cradle-to-grave, 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. 

    Faxon manufactures all our barrels in Cincinnati, Ohio under our ISO:9001 and AS:9100  quality certifications. 

    • Barrel Material: 4150 
    • Barrel Type: Button Rifled 
    • Barrel Caliber: 300BLK AAC
    • Barrel Twist: 1:8RH
    • Barrel Length: 7.5
    • Barrel Profile: Medium
    • Barrel Gas System: Pistol
    • Inside Finish: QPQ Nitride
    • Outside Finish: QPQ Nitride
    • Muzzle Thread: 5/8"-24 
    • Gas Block Diameter: .750"
    • Gas Block Journal Length: 1.9"
    • Gas Hole Diameter: 
    • Barrel Extension: M4
    • Weight: 1.02 lbs
    • Magnetic Particle Inspected!
    • 11-degree Target Crown
  • Product Reviews


    Write A Review

    1. great package unit

      Great quality. I bought a barrel and bolt package to put on a suppressed 300 BLK. Unit works great. Fit and finish were excelent. I'll buy more in the future. on 2nd Feb 2017

    2. Another great and affordable barrel from FAXON

      This went on a folder AR pistol build with matching Faxon bolt/BCG. It shoots sub 4 MOA at 100 yards, so far and maybe better with a magnified optic. on 4th Dec 2016

    3. Nice 7.5" blackout barrel

      The fit in my upper was nice and snug but not too tight. Fit perfect! finish was very nice. It shoots great for what I've done so far. Haven't really pushed it to see how accurate it is. the Nitride inside finish is great for cleaning. The barrel is very clean to shoot. Running it with a Nitride BCG and it is smooth.
      I would have given it a 5 star except 2 of my own small complaints not actually the barrel.
      1. no gas port size listed on the webpage it's blank
      2. I wish it was 1:7 twist with the size of the barrel it needs all the stabilization it can get with hefty hefty bullets
      But I have had zero problems with this barrel and I would buy it again for the price!
      Thanks FAXON
      on 4th Oct 2016

    4. 7.5" 300 BO BARREL

      Thanks for the fast shipping on of another quality barrel. on 8th Sep 2016

    5. 300 Blk Out

      Nice product. Fit and Finish are excellent. Gas Port is sized properly and experienced no short stroking at all running 17 Gr of H110 with 147 Gr General Dynamics at 2.140 COL. Plan on using again. Also ran well with 16Gr of 110 at 2.035. on 17th Jun 2016

  • Product Videos

    • Faxon Firearms 16'' 4150CMV Mid-Length SOCOM AR-15 Barrel (HD)

    Faxon Firearms 16'' 4150CMV Mid-Length SOCOM AR-15 Barrel (HD) Mrgunsngear Shirt link: Music by Youtube Creators & Machinima Sound
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