UBB.threads Forums Edged Weapons SS Dagger Forum M7/66/34/SS folding knife

Not sure what the following knife is from SS
It was from my farther in-law, he was in Vietnam war as Marine.
On the knife following info
RZ circle around it with m in circle (RZM)
M7/66/34/SS
SS - Streifendie m or n31
With A Swastika. Symbol on part of folding handle hasp
On blade there's a squirl with name around it, Carl Eko horn solingen