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Quarter Circle 10 .357 Sig / .40 S&W / 10mm Auto Bolt Assembly

Bolt Carrier Group


Features and Specifications:

  • Advanced blowback design
  • Manufactured to function reliably with Glock .40 S&W magazines  
  • Drop-in Installation
  • 8620 Steel Bolt
  • QPQ Nitride treated for maximum durability and wear resistance.
  • Heavy Duty Extractor
  • Removable mass
  • 15 oz assembled weight.
More Information
Product Type Bolt Carrier Group
Manufacturer Quarter Circle 10
Color Black
Finish Nitride

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