Comments by "Christopher I P" (@thesturm8686) on "How Does It Work: Roller Delayed Blowback" video.

  1. The block of metal that holds the barrel or the rear bit in place, depends on wether is it front or rear trunnion
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  2. Chain gun was it?
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  3.  @jantschierschky3461  different systems i guess, i remember reading about machine gun powered by electric motor
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