Quarter Circle 10 - YKMF-5Photo Of The Day and we have a great picture of the YKMF-5 9mm AR Side Charging Pistol made by QC10. As you can see, it has been designed for 9x19mm MP5 magazines. The upper and lower have been milled from billet 7075-T6, with Type III hard coat anodizing. The barrel is a QC10 5.5” 9mm, with […]

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