Answers for Will this work with Quarter Circle 9mm side charging upper?

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Stern Defense + Gun Parts Stern Defense Gun Parts Stern Defense SD BU9 NiB ECHO 9mm Bolt Carrier for AR-15 Glock-Pattern Upper Receiver Stern Defense SD BU9 NiB ECHO 9mm Bolt Carrier for AR-15 Glock-Pattern Upper Receiver Q&A Question - Will this work with Quarter Circle 9mm side charging up Stern Defense + Gun Parts Stern Defense Gun Parts + AR 15 Parts Stern Defense AR15 Parts + AR15 Upper Parts Stern Defense AR15 Upper Parts Stern Defense SD BU9 NiB ECHO 9mm Bolt Carrier for AR-15 Glock-Pattern Upper Receiver Stern Defense SD BU9 NiB ECHO 9mm Bolt Carrier for AR-15 Glock-Pattern Upper Receiver Q&A Question - Will this work with Quarter Circle 9mm side charging up Stern Defense + Gun Parts Stern Defense Gun Parts + Rifle Parts Stern Defense Rifle Parts + AR 15 Parts Stern Defense AR15 Parts + AR15 Upper Parts Stern Defense AR15 Upper Parts Stern Defense SD BU9 NiB ECHO 9mm Bolt Carrier for AR-15 Glock-Pattern Upper Receiver Stern Defense SD BU9 NiB ECHO 9mm Bolt Carrier for AR-15 Glock-Pattern Upper Receiver Q&A Question - Will this work with Quarter Circle 9mm side charging up Stern Defense + Gun Parts Stern Defense Gun Parts + AR 15 Parts Stern Defense AR15 Parts Stern Defense SD BU9 NiB ECHO 9mm Bolt Carrier for AR-15 Glock-Pattern Upper Receiver Stern Defense SD BU9 NiB ECHO 9mm Bolt Carrier for AR-15 Glock-Pattern Upper Receiver Q&A Question - Will this work with Quarter Circle 9mm side charging up Stern Defense + Gun Parts Stern Defense Gun Parts + Rifle Parts Stern Defense Rifle Parts + AR 15 Parts Stern Defense AR15 Parts Stern Defense SD BU9 NiB ECHO 9mm Bolt Carrier for AR-15 Glock-Pattern Upper Receiver Stern Defense SD BU9 NiB ECHO 9mm Bolt Carrier for AR-15 Glock-Pattern Upper Receiver Q&A Question - Will this work with Quarter Circle 9mm side charging up Stern Defense + Gun Parts Stern Defense Gun Parts + Rifle Parts Stern Defense Rifle Parts Stern Defense SD BU9 NiB ECHO 9mm Bolt Carrier for AR-15 Glock-Pattern Upper Receiver Stern Defense SD BU9 NiB ECHO 9mm Bolt Carrier for AR-15 Glock-Pattern Upper Receiver Q&A Question - Will this work with Quarter Circle 9mm side charging up Stern Defense + Gun Parts Stern Defense Gun Parts + AR 15 Parts Stern Defense AR15 Parts + AR15 Upper Parts Stern Defense AR15 Upper Parts + Bolt Carrier Groups Stern Defense Bolt Carrier Groups Stern Defense SD BU9 NiB ECHO 9mm Bolt Carrier for AR-15 Glock-Pattern Upper Receiver Stern Defense SD BU9 NiB ECHO 9mm Bolt Carrier for AR-15 Glock-Pattern Upper Receiver Q&A Question - Will this work with Quarter Circle 9mm side charging up Stern Defense + Gun Parts Stern Defense Gun Parts + Rifle Parts Stern Defense Rifle Parts + AR 15 Parts Stern Defense AR15 Parts + AR15 Upper Parts Stern Defense AR15 Upper Parts + Bolt Carrier Groups Stern Defense Bolt Carrier Groups Stern Defense SD BU9 NiB ECHO 9mm Bolt Carrier for AR-15 Glock-Pattern Upper Receiver Stern Defense SD BU9 NiB ECHO 9mm Bolt Carrier for AR-15 Glock-Pattern Upper Receiver Q&A Question - Will this work with Quarter Circle 9mm side charging up

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Stern Defense SD BU9 NiB ECHO 9mm Bolt Carrier for AR-15 Glock-Pattern Upper Receiver

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A

Answered by Armando R., Gear Expert, from IL, United States, on February 11, 2020

Yes, it should be compatible with the Quarter Circle 10 side charging uppers.

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A

Answered by Lane, guest, from TX, United States, on February 18, 2021

Yes it does. I use a Stern Bros lower and a QC10 S/Charge upper, Fostech Echo 2 trigger, and JP SCS and it works flawlessly

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Stern Defense + Gun Parts Stern Defense Gun Parts Stern Defense SD BU9 NiB ECHO 9mm Bolt Carrier for AR-15 Glock-Pattern Upper Receiver Stern Defense SD BU9 NiB ECHO 9mm Bolt Carrier for AR-15 Glock-Pattern Upper Receiver Q&A Question - Will this work with Quarter Circle 9mm side charging up Stern Defense + Gun Parts Stern Defense Gun Parts + AR 15 Parts Stern Defense AR15 Parts + AR15 Upper Parts Stern Defense AR15 Upper Parts Stern Defense SD BU9 NiB ECHO 9mm Bolt Carrier for AR-15 Glock-Pattern Upper Receiver Stern Defense SD BU9 NiB ECHO 9mm Bolt Carrier for AR-15 Glock-Pattern Upper Receiver Q&A Question - Will this work with Quarter Circle 9mm side charging up Stern Defense + Gun Parts Stern Defense Gun Parts + Rifle Parts Stern Defense Rifle Parts + AR 15 Parts Stern Defense AR15 Parts + AR15 Upper Parts Stern Defense AR15 Upper Parts Stern Defense SD BU9 NiB ECHO 9mm Bolt Carrier for AR-15 Glock-Pattern Upper Receiver Stern Defense SD BU9 NiB ECHO 9mm Bolt Carrier for AR-15 Glock-Pattern Upper Receiver Q&A Question - Will this work with Quarter Circle 9mm side charging up Stern Defense + Gun Parts Stern Defense Gun Parts + AR 15 Parts Stern Defense AR15 Parts Stern Defense SD BU9 NiB ECHO 9mm Bolt Carrier for AR-15 Glock-Pattern Upper Receiver Stern Defense SD BU9 NiB ECHO 9mm Bolt Carrier for AR-15 Glock-Pattern Upper Receiver Q&A Question - Will this work with Quarter Circle 9mm side charging up Stern Defense + Gun Parts Stern Defense Gun Parts + Rifle Parts Stern Defense Rifle Parts + AR 15 Parts Stern Defense AR15 Parts Stern Defense SD BU9 NiB ECHO 9mm Bolt Carrier for AR-15 Glock-Pattern Upper Receiver Stern Defense SD BU9 NiB ECHO 9mm Bolt Carrier for AR-15 Glock-Pattern Upper Receiver Q&A Question - Will this work with Quarter Circle 9mm side charging up Stern Defense + Gun Parts Stern Defense Gun Parts + Rifle Parts Stern Defense Rifle Parts Stern Defense SD BU9 NiB ECHO 9mm Bolt Carrier for AR-15 Glock-Pattern Upper Receiver Stern Defense SD BU9 NiB ECHO 9mm Bolt Carrier for AR-15 Glock-Pattern Upper Receiver Q&A Question - Will this work with Quarter Circle 9mm side charging up Stern Defense + Gun Parts Stern Defense Gun Parts + AR 15 Parts Stern Defense AR15 Parts + AR15 Upper Parts Stern Defense AR15 Upper Parts + Bolt Carrier Groups Stern Defense Bolt Carrier Groups Stern Defense SD BU9 NiB ECHO 9mm Bolt Carrier for AR-15 Glock-Pattern Upper Receiver Stern Defense SD BU9 NiB ECHO 9mm Bolt Carrier for AR-15 Glock-Pattern Upper Receiver Q&A Question - Will this work with Quarter Circle 9mm side charging up Stern Defense + Gun Parts Stern Defense Gun Parts + Rifle Parts Stern Defense Rifle Parts + AR 15 Parts Stern Defense AR15 Parts + AR15 Upper Parts Stern Defense AR15 Upper Parts + Bolt Carrier Groups Stern Defense Bolt Carrier Groups Stern Defense SD BU9 NiB ECHO 9mm Bolt Carrier for AR-15 Glock-Pattern Upper Receiver Stern Defense SD BU9 NiB ECHO 9mm Bolt Carrier for AR-15 Glock-Pattern Upper Receiver Q&A Question - Will this work with Quarter Circle 9mm side charging up