It was made in Italy. Wonderful little pistol. Take time and enjoy this little honey.
Any of the major makers.
The 84 and 84FS are visually identical and offered in both a blued or nickel finish. The 84FS has a number of internal changes that add safety features.
The Beretta Firearms Corp. manufactures out of Italy.
The M9 is made by Fabbrica d'Armi Pietro Beretta - the Beretta corporation. It's an Italian company.
Italy ... BTW a Beretta is a fine piece.
Contact Beretta
You will have to contact Beretta
Some. I own a Beretta 92FS. It's a variation of the M9 used by the military. Both my gun and all M9s used in the US military are made in the US. However, you can purchase Italian made Beretta guns.
There is no oil tank on any Beretta ever made.
Italy and USA
Italy