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Stern 9mm barrels are ideal for gun lovers who want to build their own custom dedicated 9mm  AR15 upper group. Our barrels offer an advantage over the competition.  Every stern defense barrel throat is machined deeper for a longer free bore to accommodate bullets with a longer ogive.  We have found, some common defense rounds jam into the rifling before the round is fully chambered. Some of the barrels on the market do not accommodate this and can and will potentially result in nasty malfunctions resulting in a round being stuck in the chamber either requiring firing to clear or manual methods.

Note: Barrel comes with locating pin installed.


  • Barrel length is measured in overall length.
  • Caliber: 9mm.
  • Length: 6 Inches.
  • Made in the U.S.A.
  • Threaded 1/2-36.
  • 1:10 TWIST.
  • 4150 Chrome-molly steel.
  • Melonite coating.

2 Reviews Hide Reviews Show Reviews

  • 5
    A fine barrel in a hard to find length

    Posted by CJ on Sep 10th 2021

    Wanting to complete my 9mm AR pistol build with a 6 inch barrel, Stern was about the only choice for that length. Not only was I able to get the desired length, but the barrel was fairly priced, shipped fast and has met all of my expectations! Great product!

  • 5

    Posted by Gene Fleitas on May 4th 2021

    It was a great product just as advertised you have a great store and a great business I enjoy doing business with you