Soviet Marksmanship Pin?

[WILTON]

I can't find this in any image searches. The rifles most closely resemble a Soviet Moisin Nagant.
Can anyone confirm?

 

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[Carolina Tom]

Italian mannlicher... Carcano!

https://en.wikipedia.org/wiki/Carcano

Maybe?

 

[WILTON]

Very close for sure, and there were some Carcano models with a groove in the forend area.