Again, nearly all rebuilding was completed between the wars. Austria and Hungary both upgraded their rifles to the new cartridge. Bulgaria also upgraded theirs to the new cartridge shortly thereafter. This was done between the wars. Production on these stopped in the early 1920's as they were obsolete. There were no major changes made to any of them post WWII. Bulgaria may have refurbished them prior to sale on the surplus market and if that is what you are asking, there really is no way to tell other than they will look refurbished.Information
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