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Quarter Circle 10 .40 S & W Side Charging Builder's Kit

Side Charging GSF .40 S&W Builders Kit

Rear Charging GSF .40 S&W Builders Kit


Quarter Circle 10, THE AR Pistol Caliber BRAND. Leader in top of the line, dedicated AR15 Pistol Caliber parts. Glock Small Frame .40 S&W Builders Kit

CALIFORNIA BUYERS: Please check with your transferring dealer before ordering. Many CA dealers are unwilling to process lower receiver transfers.

As low as $913.95
Availability: In stock


  • Builder's Kit includes the "bones"- the core components for building your own Quarter Circle 10 Carbine or Pistol
  • QC10 Stripped Glock Small Frame Lower Receiver with proprietary parts

  • QC10 Billet Upper Receiver

  • .40 S&W barrel in 5.5", 7.5", 10.5", or 16" length

  • G40 Bolt Assembly

  • QC10 Adjustable Buffer Kit
  • Made For the AR Platform- Not Modified

Any orders containing lower receivers require a verified FFL dealer to make the transfer.

Lower receivers will not be shipped until QC10 has  your dealer's license on file.

Please contact your desired dealer about sending us a copy of  their license.

More Information
Size Large
Charging Handle Without Charging Handle
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