Complete Side Charging Upper Receiver .40 S&W Assembly

Out of stock


Quarter Circle 10, THE AR Pistol Caliber BRAND. Leader in top of the line, dedicated AR15 Pistol Caliber parts. Complete 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.


Returns: Quarter Circle 10 offers a 30 day return, refund and exchange policy. See Details.

  • Designed specifically for pistol-caliber AR builds

  • QC10 Side Charging Upper Receiver

  • QC10 Non-reciprocating Charging Handle

  • .40 S&W QPQ Nitride-Treated Barrel

  • Compatible with QC10 Ranger (GSF) Lower Receiver
  • QC10 .40 S&W Bolt 

  • MLOK Handguard

  • QC10 Pistol Caliber Flash Hider

  • Test-fired at the factory
  • Made For the AR Platform- Not Modified

  • **GIBBZ Arms Patented Left Side Charging Handle Pat. No. 9,310,146


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