I came across some photos showing the so called "franken" magazines supposedly used in Viet Nam before the 30 round M16icon magazine was issued. The story: the upper part of the M16 magazine has an AK-47 magazine attached, which would provide about 30 rounds of 5,56mm.

Can anyone provide additional information or photos of examples ?Attachment 102497Attachment 102498Attachment 102499
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