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Quarter Circle 10 40sw 10.5" AR-15 Barrel


$200.00

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Product Description

Quarter Circle 10 is proud to offer the best .40 S&W barrels available for the AR-15 platform. All our barrels are made right here in our shop from the finest materials available, and feature hand-polished feed ramps and chambers. We turn, chamber, and thread each barrel to exacting tolerances, and all QC10 .40 S&W barrels are threaded for the attachment of flash hiders, suppressors*, and accessories, and finished with a nearly indestructible protective treatment. Our barrels have a medium outer profile and come in a variety of lengths to suit any need. Our .40 S&W barrels feature:

  • 4140 Chrome-Moly steel
  • 1-in-10″ twist rate
  • .578-28 threading
  • Melonite nitrocarburized protective layer
  • .75″ (medium) profile

Now, the modularity of the AR-15 platform can be easily combined with the light weight, easy availability, and broad selection of the .40 S&W cartridge. Whether for home-defense, law enforcement, competition, or plinking, Quarter Circle 10 has you covered, with our philosophy of Made For- Not Modified. Each of our parts is engineered and manufactured with pistol-calibers in mind, rather than modified from rifle-caliber components as an afterthought. We’re Quarter Circle 10, the AR Pistol-Caliber brand.

Note: Our barrels are measured from the end of the muzzle to the end of the breech/feed ramp. Approximately 1″ of the barrel rests inside the upper receiver upon installation, resulting in an installed length of 1″ less than listed overall length.

  • Model: 40SW-BAR-10.5
  • Shipping Weight: 1.5lbs
  • Manufactured by: QC10

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This product was added to our catalog on Tuesday 07 June, 2016.