Quarter Circle 10, THE AR Pistol Caliber BRAND. Leader in top of the line, dedicated AR15 Pistol Caliber parts. .45 ACP Glock Style Bolt Assembly

  • Advanced blowback design
  • Manufactured to function reliably with Glock .45 ACP 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.