Indy's revolver in Demons of Deception

[Indiana Joosse]

In the first part, wich was basically Verdun, we get to see Indy crawling across the trenches to listen at the German command bunker. As he is crawling, he is holding a revolver.

I was wondering if anybody every identified this revolver?

EDIT: I was told on the Raven that the Revolver Indy used throughout most of the WWI episodes is a Nagant M1878 revolver.

Thank you, Exulted Unicorn.

Can anybody here confirm or deny that?