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.

QC10 Billet Rear Charging Upper

Availability: In stock

Quarter Circle 10 - The AR15 Pistol Caliber BRAND - Billet Rear Charging  Upper Receiver


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.

  • Designed and milled in-house specifically for pistol-caliber AR builds

  • 7075 Billet Construction

  • Widened ejection port for large pistol caliber pistol cases

  • Made For the AR Platform- Not Modified

  • 7.54 oz stripped weight

  • Handguards with overlapping anti-rotation tabs may not be compatible with QC10 billet upper receivers, including Side Charging uppers.

*This product is not compatible with DI gas systems or rifle-caliber bolts

More Information
Size Large
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