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Shipping: All orders are shipped within 72 hours Monday - Friday 8am - 5pm PST
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.
QC10 Glock Large Frame Lower Receiver with Proprietary Parts (Ejector, Mag Catch and LRBHO Assembly)
Engineered for .45ACP and 10MM GLOCK® Magazines.
Last Round Bolt Hold Open on Empty
Billet 7075-T6 Aluminum
Accepts Glock Cut .45ACP 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.
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.
CALIFORNIA BUYERS: Please check with your transferring dealer before ordering. Many CA dealers are unwilling to process lower receiver transfers.