Due to ATF final rule 2021R-08F, all Quarter Circle 10 Full Pistol Builds will no longer come with pistol braces installed or included.
Please contact us if you have any questions before ordering.

.45 ACP Glock Style Bolt Assembly

Availability: In stock

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


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.

  • Advanced Blowback Design

  • Engineered to function specifically with Glock .45 ACP magazines and ammunition. 

  • Patented bolt face and extractor geometry for optimum performance and reliability. 

  • Drop-In Installation

  • Heat Treated  8620 Steel Bolt

  • Hard Chrome Firing Pin

  • QPQ Nitride treated for maximum durability and wear resistance.

  • Heavy Duty Dedicated .45ACP Extractor

  • Removable Bolt Mass

  • Threaded Extractor Retaining Pin

  • 15 oz. Assembled Weight

  • Quarter Circle parts are designed to work within mil-spec perimeters.  However, for optimum performance we recommend using QC10 parts for all your core elements, (Receivers, bolt, barrel and adjustable buffer system). 

  • Made For - Not Modified.  Every QC10 product is engineered specifically for pistol caliber ammunition, not modified from an existing platform, increasing functionality, reliability and overall performance.

More Information
Model / Caliber GLF .45ACP
Caliber .45 ACP
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