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5.56mm ammo ID

2742 Views 2 Replies 3 Participants Last post by  DocAV
I just received some 5.56mm cartridges in 20 round, brown paper boxes marked

5,56 mm
BALL - 55 GR.

LOT FNM 72-6

The headstamp is "FNM 72-6" they are brass cases with crimped in, bright primers.

I assume this is M193 ball made in June 1972 but is it FN or Portuguese ammo? Any idea as to the quality?
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