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.

Rear Charging QC5 9MM Builders Kit

In stock


From $929.95

To $959.95

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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Rear Charging QC5 9MM Builders Kit
Rear Charging QC5 9MM Builders Kit

In stock



    • Builder's Kit includes the "bones"- the core components for building your own Quarter Circle 10 Carbine or Pistol

    • QC10 Stripped QC5 Lower Receiver with proprietary parts

    • QC10 Billet Upper Receiver

    • 9x19mm barrel in 5.5", 7.5", 10.5", or 16" length

    • G9 Bolt Assembly

    • QC10 Adjustable Buffer Kit

    • Made For the AR Platform- Not Modified