I can't find anything on that make or any importer. Was the gun purchased in the U.S.? If so, there should be an importer's name on it somewhere, and they might have some parts. If it was bought in Turkey, all I can say is "good luck." (Cost of part - $5. Air fare to Ankara and return - $3500.)
Seriously, try a gunsmith and see if the part can be made and get an estimate.
Jim