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Rotary Delayed Blowback: CMMG 9mm AR15 upper on WWSD 2020 lower

Mike (Bloke) takes a look at a 300 series CMMG Resolute 16″ 9mm Para rotary delayed blowback upper on his WWSD2020 KE Arms lower.

Aside from a little reliability issue on the ejection, which he’s hopeful he will be able to solve, he thinks this system is absolutely great!

And obviously the intro is a tribute to @LockPickingLawyer

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9×19
9x19mm
Parabellum
upper
Wechselsystem
What Would Stoner Do
PMag
P-Mag
blow back

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