Very interesting.  A picture of the PNG guns would be great?  I too only imagine this Mau Mau example working with a 9mm round.  Bang at six metres from under a coat or jacket and you might be dead if not you are very unlikely to start jumping around fighting back.  I would think it not hard for the house maid or other servants to secure the odd 9mm round from thier masters home.  I have heard that they say in counter terroism, "shoot the women first" 

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