Not a 24/47 or other intermediate length Yugoslav action handguard there Poot. That's a short handguard like from a model 30 or, as he mentioned, from an M1924B, though I don't see anything to specify it necessarily as Yugoslav. plainly, it didn't go with that or that type rifle.
"In times of trouble and of war, God and soldiers we adore; When wars are done and wrongs are righted, God's forgotten and the soldier slighted." Ye Olde English proverb; origin unknown
I make reproduction Yugoslav pre-WWII rifle slings and bayonet frogs.