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Quarter Circle 10- AR15-9MM Barrels

9x19mm Barrels

Quarter Circle 10 .45 ACP Bolt Assembly

.45 ACP Glock Style Bolt Assembly

.40 S&W Bolt Assembly

Quarter Circle 10, THE AR Pistol Caliber BRAND. Leader in top of the line, dedicated AR15 Pistol Caliber parts. .40 S&W Glock Style Bolt Assembly



Availability: In stock
  • 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
Color Black
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