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81M and 3M

jvollenberg

Well-Known Member
Ordnance approved
Now here is a question that is probably pretty basic, but something I haven't thought of before.

Why did some US mortars have 81M & 3M on them?

They are 81MM mortars, but the 3?

Any ideas?

Joe
 
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I assume to indicate the round could be used in different launchers.



Found this on google :

81MM.jpg1.jpg2.jpg




Tm9-1901 :
tm.jpg
 
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