FREE Upgraded CMC Curved Trigger! $168 Value! Limited quantities available!
Quarter Circle 10, The AR Pistol Caliber BRAND. Leader in top of the line, dedicated AR15 Pistol Caliber parts.
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.
CMC Curved Trigger Upgrade:
The CMC Single Stage trigger features a non-adjustable curved trigger bow with a 3.5lb pull that breaks like glass. It has almost no take-up and extremely short reset to make follow up shots fast and easy.
Quarter Circle 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 firearm 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.
Important Warranty Note:
If you intend to register your Quarter Circle 10 firearm as an NFA weapon, test it thoroughly before doing so in a Title 1 Configuration. Once you Form 1 or Form 2 it, you are legally the manufacturer, and we cannot service the firearm. Should your firearm require warranty replacement we can only replace it with a Title I receiver and we are not responsible for tax stamps or NFA fees.