Radial Delayed Blowback VS Roller Delayed Blowback!

​ @CMMG 's Radial Delayed Blowback is an awesome PCC system, so how does it compare to the legendary Heckler and Koch's Roller Delayed Blowback found in systems like the MP5? The high speed camera helps us find out.

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This test is for educational purposes and is specifically filmed and produced in accordance with YouTube's community guidelines. Dustin is a certified, licensed, and insured firearms instructor. Everything was filmed on an OFFICIAL GUN RANGE and closed range with all the proper safety precautions. Do not attempt to duplicate anything yourself.