others mentioned Balkan import, meaning Yugoslavia, Romania etc. the russians numbered stocks w/# parallel to bore, the Balkan countries perpendicular, as in this example. the russians almost always disassembled the rifles, hot black dipped the parts, electro penciled the force matched parts, then put them back together, but stored them or gave them to satellite iron curtain countries as foreign aid. generally speaking, they didn’t use them themselves. defacing the firing proofs & inspection stamps is often blamed on the Romanians, i have a dot 44 with punch marks on the eagles & crosses. it’s not usually one particular feature that indicates history, but rather the sum of several. I agree w/the others, i think this was a Balkan-used rifle.