Quarter Circle 10

We are an innovative firearms manufacturer specializing in pistol-caliber AR-15 platforms. It is our goal to provide the highest quality Pistol Caliber weapons and components on the market, and the service our users demand and deserve. Our weapons are American designed, manufactured, and built to exacting standards, and we don’t sell anything we wouldn’t trust with our own lives.
  • Quarter Circle 10 9mm 5.5-Inch Barrel

    Quarter Circle 10 9mm 5.5-Inch Barrel

    4150 CMV steel 1-in-10″ twist rate 1/2-28 threading QPQ Nitride treated .75″ (medium) profile QC10 9mm barrels are threaded for the attachment of flash hiders, suppressors,* and accessories, and finished with a nearly indestructible protective...

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