Manufactured in the Dongrae (Pusan) Republic of Korea Army plant, this M2 ball surplus ammunition carries the KA headstamp. KA headstamp ammunition has mildly corrosive primers and requires the cleaning of the firearm after firing. Corrosive primers contain traces of salt that attract moisture, but are easily removed by using hot soapy water and then cleaning and oiling as normal. Each vintage 30 caliber ammo can contains approximately 250 rounds in the original metal linked configuration. The rounds may easily be delinked by pushing them back out of the links. This ammunition is boxer primed with military crimp in brass cases. Item # 187684 is mixed headstamp with mostly boxer primers, but may contain an occasional berdan primer.