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.40 S&W Barrels

.40 S&W Barrels

Quarter Circle 10 CLT9MM Lower Receiver

CLT9MM Lower Receiver

Glock Small Frame 9MM Lower Receiver

Quarter Circle 10, THE AR Pistol Caliber BRAND. Leader in top of the line, dedicated AR15 Pistol Caliber parts. Glock Small Frame Lower Receiver

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


As low as $242.25
Availability: In stock

  • QC10 Glock Small Frame Lower Receiver with Proprietary Parts (Ejector, Mag Catch and LRBHO Assembly)

  • Engineered for 9mm, .40 S&W & .357 SIG GLOCK® Magazines

  • Last Round Bolt Hold Open on Empty

  • Billet 7075-T6 Aluminum

  • Accepts Glock Cut  9MM Bolt Assembly

  • Type III Hard Coat Anodizing

  • Accepts Mil-spec Pistol/Carbine Buffer Tube

  • Threaded Bolt Catch Pin

  • 12 oz stripped weight

  • Quarter Circle 10  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.

All orders containing a lower receiver must be shipped to a licensed,  Federal Firearms Dealer(FFL). Please have your FFL email us a copy of their current Firearms license.  Orders cannot be shipped without one.

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