"Thanks to the agreement signed today, Polish firms will deliver 48 M903 launchers, which will be manufactured in Poland," the ambassador said.
He added that Poland will have "the highest capabilities in air defense" with these weapons.
Last month, the US approved a $2 billion defense loan to Poland.
Polish National Defense Minister Wladyslaw Kosiniak-Kamysz, who attended the signing ceremony, said that the contract was worth more that $1 billion. He also stated that new military contracts would be signed soon.