June 5, 2023

Spotter Up

In Depth Tactical Solutions

SHOT show 2017 product spotlight: Quarter Circle 10 Side charging upper and MP5 lower

1 min read

Quarter Circle 10 has made a name for itself as a high quality american made and designed manufacturer of pistol-caliber AR platform pistols and carbines. Their latest offering is a lower receiver that accepts MP5 magazines, and a side charging upper receiver.

Available in Spring/Summer 2017 here: https://www.quartercircle10.com

My own personal PCC is a complete QC10 build, and i can attest to its quality and reliability. Here i am in 10 degrees shooting Steel Challenge with my PCC SBR in Quantico VA.


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