9MM Universal Bolt Assembly
Quarter Circle 10, THE AR Pistol Caliber BRAND. Leader in top of the line, dedicated AR15 Pistol Caliber parts. 9MM Universal Bolt Assembly
Shipping & Returns
Shipping: All orders are shipped within 72 hours Monday -Thursday 6am - 4pm Arizona Time.
Any order containing a lower receiver will not be shipped until we receive a copy of your FFL. Once received regular shipping policies apply. Submit your FFL Here.
Holiday Shipping: The QC10 Shop is closed from December 223rd-January 2nd. During this time, shipping will also be closed. You order will be processed on Jauary 2nd and will ship out the same or next week. Please double check your shipping information as well as get your FFL info in so that your order will not be delayed.
Returns: Quarter Circle 10 offers a 30 day return, refund and exchange policy. See Details.
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Advanced blowback design
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Manufactured to function reliably with any QC10 9mm platform. Glock, SigP320, MP5, and CLT9MM magazines supported.
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Drop-in Installation
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8620 Steel Bolt
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QPQ Nitride treated for maximum durability and wear resistance.
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Heavy Duty Extractor
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Removable mass
| Color | Black |
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